The topic of good IWB holsters comes up here a lot.
I'm not a big fan of the carry style but a few forum members like or use it.
See here:
www.galcogunleather.com www.safariland.com www.COMholsters.com www.tedblockerholsters.com www.donhume.com www.blade-tech.com www.mitchrosen.com www.miltsparks.com Alessi, DeSantis, Kramer Gun Leather.
ClydeFrog