I prefer IWB and generally use a Lobo like Roundgunner's last one pictured above. That style, with the snap straps help distribute the weight over a broader area across a good stiff belt and IWB keeps it in tight to the body. I carry Nightguards (325 & 329), 24-3 LHs, and also have one for 4" guns (29-2,3). I also sometimes use a Milt Sparks Summer Special for my 4" fixed sighted N frames 21-4, TripleLock, and HE-4th.