I carry a Glock 27 as my main concealed/undercover handgun for daily use. Depending on what I am doing I might carry a Detonics Combat Masterpiece if I don't mind the extra weight of a 45acp & all SS handgun. I use a S&W 642 as a BUG in an ankle holster. I would only consider lighter calibers as a BUG not a primary firearm.