I think the VM-2 is a great holster and I own three. Never do I use the kydex clips for tucking. Yes, they are rock solid. Yes, it can be something of a chore to get the tucked in well such that there are no "pulls" from the clips. The clips also don't allow much room for tucking, so heavier weight shirts don't tuck that well. Thin dress shirts tuck much better. Any length of the shirt that would hang below the holster much be packed or folded into the clip, so there can be a problem with bunching. As such, being able to pull up your shirt to draw the gun first requires enough strength to overcome the clips, then the bunched fabric in the clips. I have managed to rip one shirt while practicing to see how well it would work. Somebody in another thread had suggested that it was really a two pull endeavor to get to the gun, but I think it can be done in one big pull, but it has to be a strong pull.
Galco makes a Deep Cover holster that uses a j-shaped piece to loop over the top edge of the pants and then hook under the belt. There is little or no pinching of the fabric in the V-shaped tuck area, nothing to snag on. I have one for a Colt Pony and it works well. The largest size they have, I believe, fits a Glock 26/27 and apparently nothing for any size of 1911s. The one other drawback it has is no body side sweat shield to keep the top rear of the gun from touching skin. Ideally, this holster should be worn with an undershirt to prevent skin contact.