Trek-Pod is excellent if you suffer with camera shake, and find that using a tripod is too conspicious. With the legs open it is remarkably stable, okay you cannot walk away and leave it, but it gives that extra stability. As for using it as a walking stick I think it would have benefitted from a metal cover which would have strengthened and protected the legs. The "Earth Metal" Mag Mount is excellent, very strong, and the clip secured my DSLR superbly.I have used the table top version and found it extremely versatile for my product photography. I have yet to use the Tripod Clamp, but I'm sure I will find it useful for Macro work.
Oct 2011 Update: Weak point was as expected, and the Trekpod failed just over 12 months from purchase. Excellent idea let down by poor design. Collar cracked where the legs screwed onto the main column.