If you're concerned with extremely deep concealment and not deployment, I suppose it's something to look at. I don't like the idea of having to draw through your belt though. My concern would be that you'd have wear your belt looser than you want to to ensure that the pistol passes easily between it and your body. So now you have a heavier holster, with weight hanging lower, on a looser belt. Also, I can't see how, if you carry it appendix, you'd have access to it if you were seated.
It doesn't excite me.