I agree with what everyone has told you.
Had a Glock 23 once.
You may want to shoot a Springfield XD-M if one is available.
Their grip angle appears to be almost identical to a 1911 and it has a grip safety which the Glunck does not have.
I've got the older XD-45. 13 +1 in a 45acp is nice.
The recoil pulse is a bit more of a throw than my 1911 govt though.
Here is an M7 shoulder holster to check out if you end up with a 1911:
http://www.pacificcanvasandleather.c..._holsters5.htm
http://www.cabelas.com/product/Leath...h-All+Products