I'm not convinced.
By these rely-on-the-grip-of-the-thingy-in-your-ear-to-hold-it-in-place objects. To me they always feel as if they're on the point of falling out, even if they don't (although they usually do at some point in my experience).
Using on the move something that costs 130 quid and that I'm convinced could drop out at a moment's notice sounds like a route to paranoia and a long stay in the rubber hotel to me. I'll stick with my Plantronics Voyager 520 with its comfy and secure ear hook. The fact that it's a third of the price and still does everything this does is a bit of a bonus here.