I bought this for use with compact cameras. I have two, a cannon Powershot A630 and Panasonic TZ5. The Canon is quite a hefty piece of kit, but with a central tripod socket so as long as I keep the balance central and don't lean the tripod at all, then it manages okay. So it's good for wrapping the legs round a horzontal branch or rail. Once off centre, gravity kicks in and it starts to tilt and lean and cannot support the Canon.
The Panasonic TZ5 is a smaller, lighter camera than the Canon, but the tripod socket is at the side of the camera base. So the tripod NEVER holds this camera well. I dare say I could carefully balance the camera at a weird angle and it would hold, but that's no use to me!
Instead, I bought a cheap mini-tripod with rigid legs and use that much more than the more expensive and "clever" Joby.
If the leg articulation was lockable, this would be a must-have piece of kit. As it is, it's a neat curiosity that may or may not prove useful.