yep!I love my Micro 9 and have an Alien Gear IWB holster for it. It's lighter weight doesn't want to "pants" me as much.
I carry a SIG 365 in an alien gear and its comfortable and doesn't tug on the pants, also carry my CZ P-01 in the same setup except a different shell.
course i don't really have a weight issue being 5 11 and 180 pounds and i don't have a really bad back, although at 74 is anyones back really good?
anyway sounds like the perfect answer for you is to obtain a GUN BEARER like i have for my shotgun shooting, Godfrey also drives me places ad keeps the Rolls polished really nice..