I just got one of these today, the 3.5" w/ zytel:
http://www.sogknives.com/flash.htm
Change the clip easily with a 5/64 allen, and I like the safety switch.

Quick vid here (not mine - jealous bud at work found it, heh):
http://youtube.com/watch?v=MSFJfFmtSWI

<click> Been breaking <click> it in... <click>