From the few details [1] I've been able to find it seems like it's unusable in the UK anyway as it uses 151-154 MHz, which is a licensed band. If they moved it up into the 433ishMHz unlicensed band their range claims would all have to be revised.
To me it seemed like part of your sales pitch was infering that you could use it internationally where you don't have service or don't want to pay the high overages ;)
[1] http://gigaom.com/2014/07/17/no-signal-gotenna-has-a-messagi...