Anyone skiing with a Reflex R Type rear boot? It looks kind of appealing- a little more flexibility than a standard rear binding but much more secure than a strap. I've been on double boots for years and can't see going back to a toe strap, but this looks interesting. Going to try a hard shell system and I think it's either this or Jaeger's E boots. Tried some Stradas on and they felt pretty good, too. Advice?