Late to this but will contribute anyway.

I have to agree with the others...a large gun is eventually going to get left behind if you don't have to carry it for work. Also weather is a factor: I live in Phoenix Arizona, try concealing a weapon when it is 115 outside and you are wearing as few clothes as possible!

I currently carry a Beretta Tomcat in 32. The 32 is not the man stopper a 45 is but it is lite enough and small enough that I can carry it comfortably while wearing shorts. If I am wearing a fanny pack (yes I do that sometimes) I may carry something larger.

Good luck.