Like someone else here, I'm something of a holster junkie. One thing I've found--for me at least--is that getting dressed with a tuckable holster is an exercise best done with three hands. A couple years ago I first heard of the belly band holster on a gun forum. While I rarely have to tuck a shirt over a gun, when I do, the belly band holster is what I use now exclusively. Main advantage in use is that the elastic band is wrapped around and attached to you, not your pants. You have infinite adjustability around yourself (no belt loop limitations) as well as up and down. Since the gun is in a kind of elastic pouch, the BB is pretty much a fit-all gun solution. I've even carried a full size 1911 in the BB.
The one I have I bought from amazon.com. They come in different waist size ranges, and they're available in black or white. If you carried a stainless compact 1911 with white grips in a white BB, I'll bet it would be undetectable. I usually have a black t-shirt, so a black BB and black gun are invisible.
The only drawback to the BB--other than the same drawback to any holster tucked under a shirt--is that reholstering requires two hands, since the elastic pouch goes flat when the gun is removed. I was a bit put off by the concept of the belly band when I first heard of it, but I figured for the price why not try it. The first time I used it when having to tuck a shirt I was sold. I will never again suffer with putting on a conventional tuckable holster. I sold my Crossbreed Supertuck along with my G19.
"If I were the Devil, I'd take from those who have and give to those who wanted until I had killed the incentive of the ambitious. Then my police state would force everybody back to work."
-Paul Harvey, 1964
Guns? What guns? Oh, I haven't seen those since I left my garage door open one night by mistake.