Hi:
I had an Amvox 2 a couple of years back before selling it on. It twice had to go back to JLC to have the lock/unlock switch on the left hand side of the case tightened up. Both times JLC did this work free.
There is no doubt that the vertical Chronograph is a very cool and unique piece of kit. However, I always felt the watch had an inherent fragility and the dial was relatively illegible (I had the skeleton dial version).
Pros: unique, conversation piece.
Cons: felt fragile, not an everyday watch, twice had to go back.
I love JLC but I dont think this is one of their best.