Hahaha....Andy...
Don't get a vest with a built in holster. If you ever decide you want to use your pistol, without wanting to wear the vest, you won't be able to(you won't have extra mags, or a place to store the pistol when you don't want to have it in hand. I used a pistol during the prescott game while I helped be an A-gunner on a SAW, so I threw it in my holster while I helped him.)
If you want to get off on a good foot with a nice holster, not a shitty one, get a Safariland 6004 for the model of your choice. Its a semi-expensive piece(probably worth the pistol you will be packin') at roughly $90-$100 for the holster(it is a drop-leg, by the way). But, you'll never buy another holster becuase you'll be in love with this one(unless you buy a different pistol).