The Milt Sparks VM2 is a great holster if they make it for your pistol. Having said that, it lends itself best to slim pistols. I'm not familiar with the USP compact; but the USP has never struck me as being all that slim or IWB-friendly. I'm guessing holster-thickness will be an issue when carrying it and while I love Milt Sparks, leather is thicker than kydex, even with the winged-design of the VM2.