Any of you gizmo freaks out there use this revolutionary new trick high tech gadget? My friend at the LBS is offering me a deal I can't (and I won't) refuse on another of Mavic's ahead of it's time technological marvels. (how's that for superlatives) Basically want to know what some users think of the skewer/sensor concept. Flawless? Is it worth the price of admission?? Junk??? Can't miss prospect???? Don't forget I'm getting an unbelievable deal (practically free). So feel free to bash or rave about this futuristic computerized wizardry.