gollnicks right about the pants/belt, and ya need a GOOD belt designed for holster use not some walmart special. a good holster helps also, and a light pistol makes a diff too imho, kahr's (P9 & PM9) and glocks (26,27,33,etc)are easier to pack than full size 1911's also. also ya gotta carry at least one reload so get a good mag carrier also. back in the day i carried first a 1911, then a SIG P220, then a glock 19, then a glock 33, then a kahr P9, then a PM9, every one was easier to carry than the earlier ones due to being lighter (and smaller of course). heck ya dont even really need a holster with the PM9, put it in your pocket and go.
i usually keep mine in a backpack/briefcase if i'm gonna be sitting a lot in an office type setting anyway, and put it on when leaving,
but with the right belt/holster/pants/pistol combo its not too bad imho.