No support. Why: a) Moderators would be busy finding about who looted who b) the ban appeals will be full of people who looted c) the bridging problem would pose an extra risk of being looted as well It's just not worth it.
Looting For Dummies LEFT: A Locked furnaces underneath a locked chest would not allowed hoppers/ minecart hopper to loot RIGHT: With a locked chest people still are able to loot using a minecart hopper