I CCW a 4" 629 so a 2.5" L frame aught to be simple. (I'm CCW-ing the 629 and three speed loaders, cell phone, and flashlight in the pic below...)
I use a Kydex Mirage IWB holster from Hoffner's and a Wilderness "Instructor" belt. I did drill an extra hole and relocated one of the belt loops back to spread the attachment points as far as possible.
I'd highly recommend them if they'll make one for your gun.
-Sam