I think that is a very pocket friendly light, i am no big fan of holster because the flap makes it uneasy to reach for the light but if you really want to get a holstern then you should know how much you want to spend you'll find holsters for $5 to custom made up to $100, Premium USA nylon is better and more expensive than overseas manufacturer's.
Spec Ops makes nice stuff which they sell at the BX or PX