Here at Metalab Vienna, Club-Mate is a regularly stocked item. The place closes down if there aren't a stack of crates piled high by the front door, waiting to be chilled and consumed by all and sundry.
I've never been able to enjoy it. It does wake you up, though.
Same in Hackerspace Kraków. We stockpile crates of this stuff whenever our food budget allows. About half of the space hates it, but the other half can go through two crates in a single week.
I've never been able to enjoy it. It does wake you up, though.