I have a P365 and love it. I'm considering an XL just for the fun of it. I just dry fired one at a local shop and the trigger is a lot heavier and rougher than the P365. Has anyone else noticed this?

No. The flat trigger changes the leverage point of your trigger finger, and feels longer (and maybe creepier) but lighter.

I typically don't care for straight triggers.
I find this one very workable. There's enough travel, and creep, that I find it predictable.
It 'feels' safe, even without a dingus, which is important to me.

Mine has some “grit” to the pull, but that should resolve itself with use. If not, there’s always Robert Burke.

Just get an XL frame and drop your 365 guts into it. Best of both worlds -- unless you really want that longer barrel.

I didn’t care for the trigger on my 365 or 365X so I put M Carbo trigger spring kits in both and it was a big improvement