And a holster that disengages the safety lock is a lawsuit waiting to happen.
Sorry Vern, don't follow you on that one. As you and I know, the pistol is not going to fire in the holster with the thumb safety off. When I have to draw the weapon you can bet the safety will be off! I don't see a liability issue here.
zahc,
The thumbs forward grip (or variations thereof) has been around for longer than I can remember, (and that's a long time) well at least since the advent of the extended safety. The extended safety is a good place to rest the shooting hand thumb, and also helps insure that you don't have too much finger in the trigger guard.
If you have to make a 1911 ready with the left hand, the easiest way I've found is to use the trigger finger of the left hand to disengage the safety. Not very fast, but drawing with the off hand from a strong side holster is a bit slow as well! I take it from your post that you have tried extended safetys and beavertails and didn't like them. I am just the opposite, all my 1911s have them. I would consider myself to be working at a handicap without them. Heck, I even have a couple nowdays with ambi extended safeties!! Horror of Horrors, huh?
str1