I have a Jade and have yet to see this option for it, I have been using it on green but I don't see how it helps as a custody service, it's a 2-2 I think you need atleast a 2-3 in case you lose 1 key losing 1 key in a 2 of 2 is pretty much tickets

Also I wouldn't want a long term storage with a key on a server which is a possible point of attack, rather create an offline multi-sig yourself