The Verve is relatively new (and expensive) so you're probably not going to find a lot of reviews on the track specific model for a while.
It looks pretty good overall, and with British cycling using it (at least some form) it's going to get good feedback going forward. The cadence method seems a bit murky (From the tech document - Proprietary process for accurate cadence measurement, which does not use magnets or accelerometers in order to achieve accuracy and save battery usage ) and the <2sec startup time could turn off a true sprinter... otherwise it looks solid. The crank length options, especially 155 and 160 is appealing.