That's why my EDC is a single stack S&W Shield 9mm in an IWB holster.As for the concealment issue, I'm medium build, on the shorter side, and live in a fairly temperate climate, so I'm looking for something that doesn't stick out like a sore thumb. I'm not opposed to most holstering arrangements, but think that a double stack 9mm, while providing capacity, might just be a wee bit big.
I would prefer to have my double stack CZ PCR with me all the time, but the Shield is much easier to conceal, lighter weight and is still an effective combat handgun.