I see both folding and fixed blade styles offered.
I like the idea and the looks.

But does anyone here have one, that can comment on the actual use?

The grips on a 1911 are comfortable enough .
But the knives I see on the internet are much narrower.
Are they a knife to just look at?

How awkward are they in the hand?
My hands are palming a basket ball big.

I have the Ultimate Equipment M1911 that I received as a gift some years ago. Although I do like it, I don’t carry it that often. It’s large and heavy. For me, too big for carrying in a pocket, so I have a sheath for it.

I've owned this blackened M1911 folder for more than a decade, since seeing them offered on a 1911 forum. It's a well made knife (I think this one has an upgraded steel option), but certainly more robust than I want for pocket carry. I've got a nylon case for it, but rarely carry this particular knife, since I've kind of gravitated towards assisted opening knives for EDC.

I really like the ability to use 1911 stocks on these, as I've got some really nice wood beyond that worn by my Nighthawk Custom pistols. While I wouldn't say these are "awkward" in the hand, they certainly aren't held like the Browning designed pistols. If you're a big guy (like I am), I'm sure you'd be comfortable holding/using one of these, but note that these blades are certainly easier to deploy than to unlock.

Here's my knife, utilizing handcheckered 1911 stocks that I believe were purchased from Esmeralda.

That's good looking,
I wonder if the same thing in a fixed blade would be lighter weight ?

I picked one up once and didn't think it was a good design for a knife handle.

Too deep, top to bottom, and shouldn't be that much wider at the pinky end.

So I have both the folding and the fixed in stainless steel. I’m have huge hands and they are not a terrible fit but for me not super practical. I have them in a display case in my office and will be adding a stainless 1911 with matching grips soon.