I just bought a Don Hume IWB for my Walther PPS and for $30 it is more than satisfactory. It was an off-the-shelf pick. Sure, it's not as nice as my Alessi IWB but for $30 who cares. I only wish it had a skin shield so the slide wouldn't touch my skin. I will keep looking for a reasonably priced one with the SS but until I find one this Hume works quite well.
