I just got this thing and I'm having second thoughts. It's fun to use but in my very inexperienced and short history of editing with FCP, I have managed to get by so far with using a scroll-mouse to scrub through clips and "back" and "forward" buttons built-in my mouse to move frame by frame. The Apple store has a 10-day return policy but it seems that it will take much longer for me just to get used to all the other programmable buttons in order to increase my productivity and potentially realize the Shuttlepro's usefulness or lack thereof. Currently, my use of it mostly parallels my use of the mouse scroll, back, and forward buttons to navigate clips. It is a well-constructed and impressive design but I fear that my editing skills may not mature to the level it was designed for. I fear that it might collect dust and become an expensive paper weight since video-editing is just a hobby and not a job.
Any thoughts, experiences from casual FCP/iMovie/etc users with Shuttlepro? Has its usefulness matured together with your editing skills?