Concealment Vest Primary Carry Method?

[JoeShmoe]

I'm wondering how many of you use a concealment vest as your primary carry method. Normally I carry my HK USP 40 IWB or my S&W snubby in a pocket holster. I saw a good deal on a Roma Leather concealment vest, and thought I'd give it a try. I just got it but so far I find it to be very comfortable. I'm interested in what THR members find are the pro's and con's of this carry method.