You need to find a store with a HUGE holster selection from different makers and get permission to try some. That also means with IWB, going into the restroom, loosening the belt, and seeing if it works. If it's a big store, maybe they will have a plastic 92 you can use as a model.
Many years ago, I went to Collectors Firearms in Houston and spent at least an hour at the holster rack before I decided on what worked for me. Yes, I paid a hefty premium. C.F. is not known for being a discount house, but the salesman was very knowlegable, helpful and patient and the Tucker Texas Heritage Special I bought 10 years ago is still the only IWB I've ever purchaced.
I carry the Beretta Cougar which is just as thick as the 92 but with a shorter barrel. The thickness is probably what's going to bug you with IWB. If you wear hip-hugger pants, you're probably gonna have to change to something more adult but the holster/belt combination is what you're going to spend your time on.
If the 92 fits your hands and you shoot it well, that's what you need to carry. You'll find a holster soon enough.
