My otterbox covered N900 fits quite well into my 5.11 Tactical C5 pouch. It has elastic sides like the one above and you do push a little (not hard) to get it to slide it, but it quickly gets easier. The ohone sits a little out the top but the strap over it holds if firmly in place. Works for me.

http://www.511tactical.com/All-Produ...-PhonePDA.html