I see there are products out there for carrying concealed with a tucked in shirt and I am curious if anyone has any actual experience with this and product recommendations.

I use the Comp-Tac MTAC for my Glock 32 and Sig 229. Carries well, 2 clips give good balance to the setup. Adjustable kydex, with leather against the skin. Takes a bit getting used to, with tucking in the shirt. I’ve used it with casual wear and with suits. Good belt is a must (took this guy awhile to figure that out!). “Blousing” out the shirt definitely helps. I just wish there was a bit of padding against my skin, but that would probably collect sweat and begin to smell.

I will check it out. I am thinking I would carry my Sig P938 for something like this and wonder how THIS Alien Gear is.

I carry IWB tucked in almost exclusively. I have a very good Kydex Muddy River Tactical tuckable that works very well. Their models for Sig P229, P320, and P365 are excellent.

I used to carry a Glock 26 in a Milt Sparks VM-2 fitted with Sparks’ proprietary “clips” in place of the traditional belt loops. That particular holster and gun combo worked well for me as an IWB tucked option.

I’ve tried the same with an identically-equipped VM-2 and a SIG P229 and that has, for some reason, been a challenge for me to get accustomed to. Overall, I carry “traditional” IWB more than anything else for full-size handguns, but the 229 is one I’m going to have to work on more for IWB tucked carry.

I've used the MTAc a lot with a P229 and P239. Usually 3 to 4 o'clock position. Also the Smartcarry with everything from the 229 to a pocket .380 in 12 o'clock position.

A single stack does ride more comfortably than double stack. Sitting is not as comfortable as owb carry, but tolerable for a short drive or eating a meal. The Smartcarry and small pistol is very comfortable sitting. Pant waist 2" more than normal.

Tucked is nearly as concealed as untucked, but not quite. With any additional top layer like a sport coat it is undetectable.

The skinnier you are, the harder it is to not look a little bit messy with pants slightly large and the shirt a bit bloused.

If really deep concealment or a bit more formal appearance is needed while tucked, you can tuck over the gun. The draw is nearly as fast because you need to pull up the shirt either way, just a bit more is needed if fully tucked.

Some vendors even make both J-clips and C-clips for attaching the holster to the belt. When done correctly, it is very hard for someone to even notice the clips on the belt. I've seen people put their phone holster next to one clip to further conceal it.

I still have a J frame Smith that I pocket carry when the dress code requires me to tuck in but I’m not wearing a jacket. I’ve ankle carried on occasion, but I hate ankle carry for a primary weapon.

Tucking in over IWB has never worked for me personally. If I blouse the shirt out enough that it doesn’t obviously print, I look like I was incredibly sloppy tucking it in and might as well have left it untucked.

The rare times I’m dressed business casual I wear either a sport coat, sweater, or a light vest. Everywhere else it’s untucked shirts. One of the advantages of turning into an old man is I can be eccentric in my clothing choices and people just accept it.

Smart Carry works for me, usually a G-43X. I have carried my G-19, but weight wise that's my upper limit.

https://smartcarry.com/shop/ho...rs/p/gun-mag-holster

I used to work in a hospital and was required to wear a tucked in polo shirt in a non permissive environment. I carried a J Frame in this:
www.kangaroocarry.com
It is very deep concealment, very comfortable and works with tucked in button down shirts too.

Late to the party but Vedder LightTuck is pretty nice.

I use something similar to YooperSigs, a Kangaroo Carry.
They are a basic cloth shoulder holster but they don't have any real retention beyond gravity or a velcro strap that would be slow to remove in a pinch. There also isn't much real secure trigger protection.
The solution for me, I buy a Safariland ALS and strip off the belt loops or paddle parts so it's just the shell and retention mechanism. Then velcro it into the pouch in the least visible orientation.
Been using this for many years and it works great for me.

I just received a new Vedder Light Tuck for Sig P365/365XL. It has never had a pistol in it or been on a belt... literally opened the package to be sure it was the right item and put it back in the Vedder bag and original envelope. I've used this model to carry in a tucked shirt every weekend; it works well. But, I can't use the new one because I added a light to my CCW pistol. I would trade this new Vedder Light Tuck for a Vedder pocket holster, with curve only option <https://www.vedderholsters.com/holsters/pocket-locker/> for a Ruger LCP, which is a less expensive holster than the
light Tuck.