Not used it yet, or set up the time stamps so that they're accurate, but that's how it looks on the bike. I've heard that the mount isn't perfect. We'll see.
Having switched to my Brookes saddle, the Cat Eye Volt on the back has nothing to attach to as the saddle rails aren't long enough. Managed to drill a couple of holes in the Brompton's reflector mount to mount the saddle rail clamp to it. This does mean that the bike currently has no rear reflector, but that light is visible from space, so should be no problem.