We're kinda plump. belt holsters have to either be really tight, or they slide past the belly.
Any suggestions? (other than lose a lot of weight fast....)
MWD
Two good possibilities, and a suggestion: Go to your local Wal-Mart and pick up one of the black nylon holsters they have for Crosman airsoft pistols. The one I have for my spare 9mm is meant for a Crosman *AirMag C11* and fits both my SIG and a Cz-52 pretty well.
http://www.walmart.com/catalog/product.do?product_id=5913349 They're inexpensive, at around $8.95 or so [pat my local store] and handle a 4-inch barrel 9mm pretty well. Even my Browning Hi-Power and M1911 .45 fit in it, though their longer slides and barrel sticks out the bottom of the holster. But it fits on your regular trousers belt, though the velcro-fastened flap that holds it on the belt will handle up to a GI 2ΒΌ-inch pistol belt. They're certainly not the most *professional* or classy rig in the world, but the price is right, they're high-ride [and so work while you're seated in a car] and are inexpensive enough that they can be modified if you think that'd be useful.
And if you're looking for a little better rig, once you get to Wyoming, check out a local gunshop there, tell the helpful fella or gal behind the counter that you've been using the nylon rig but are looking to find something a little nicer. With luck, they'll fix you right up; if not, you get to check out some more Wyoming gun shops.
Other possibility: I'm real fond of the U.S. military M3 shoulder holster. It's what I wore as an army tank crewman back in the 1960s, and they're simple and reasonably inexpensive. Since the originals are now collectors pieces brionging collectors prices, and since the WWII originals are now 65-years old, you'd want a good quality reproduction. The M3 uses a single shoulder strap [unlike the later M7, which has 2, plus a loop for the belt] and a nice simple belt snap. They're not really meant as a concealment rig, though a GI field jacket covers one up nicely, but mine is most commonly worn over a T-shirt. If you've ever seen the movie *The Wild Bunch*, the .45 Auto that William Holden's character is wearing is in an M3; they also work very nicely for my Browning GP and the WWII Walther P-38.

You can order one for $20.95 from Numrich Gun Parts Company,
http://www.e-gunparts.com/DisplayAd.asp?chrProductSKU=978990A&chrSuperSKU=978990&MC=Or you can get a slightly nicer one from these folks for $45.00:
http://www.uswings.com/milacc.asp