I have never really liked the feel of having a pistol magazine protrude out of the bottom of the gun unless it is because the gun grip is too small for me.  I’ve seen a few of my friends do this on their Glocks, namely the Glock 26 because it is such a small gun.   I did put an extension on a Sig 239 which is the  only gun I currently own that has this.   The first gun that I owned was a Colt 1991A1 and it only came with one pistol magazine.   It was a Colt magazine which i thought would be the best gun magazine to have, but that turned out to not be true.   After having a few problems with the slide stop not catching, I found out the magazine tab was bending and causing the issue.

I believe it was at a gun show that I picked up 2 Wilson Combat magazines and my Colt 1991A1 ran flawlessly with ball ammo.  The gun magazines really ran well with hollow point ammunition but I found the gun to be too picky with hollow point ammo that I pretty much gave up on worrying about it.   If you look at the velocity that a 45acp is flying at, I don’t think you’ll have massive over penetration issues compared to 9mm ball.   Wilson combat magazines have varying base pads and from my experience this is mostly a concern for competition shooters.   If the magazine drops free I don’t need to worry about gripping it and pulling it out for a fast reload.