I think body type and holster/belt/gun itself mating issues really drive the train here. I am 6'2'', 200ish. I have a 34 w(typically buy 36s as I AIWB) / 44L coat and conceal a G35 appendix with a sportcoat/suitcoat nearly every day.
A purpose designed belt with a purpose designed holster goes a long way toward concealability and comfort. YMMV greatly.
DB