Well, I'm a bit surprised to hear you say that, because one of the things I liked about the IFE2 was the attached pocket clip. It's supposedly a titanium alloy and seemed pretty strong to me, and I used it in my pocket for over a month with no issues.
Of course, that's the first pocket clip I've had, so maybe I haven't seen what a real clip is supposed to be like, but honestly, I found the included clip quite useful.
They do sell a replacement, but it sounds like you are looking for something beefier. Maybe somebody over on the custom forum can help you with that.
Other than that, how do you like the light?