there are lots of neat gadgets that are great in theory, not so great in practice.
i've never seen a mount like this....pretty rare in this part of the world.
maybe it was groovy popular for a year, then abandoned.
so if someone had one, loaded up their touring rig, and damaged
their aluminium bike, would they admit it? course not. they'd say
they knew a friend who............

and here's a logical thought: bicycles are often left in the main reception
hall in hotels here in asia. desk clerks get bored, like to play on the big
foreigner's big bike. they'll often be seen sitting on a parked bike with the
kickstand down. what's the compressional load of a 140-pound vietnamese
desk clerk jumping on the shoulders of another 140-pound vietnamese desk
clerk sitting on a bike with the stand down?