Kid, my buddy commutes with the long LW bag (I have the shorty) from the FL panhandle to MIA, so he gets a combo of RJ and 73/S80 flying with it (he's on the 76). It obviously can only fit the overheads sideways, which he says he has received some flack for from FA's, but it's never NOT got on with him.

Obviously neither the shorty nor the long will fit in an RJ overhead.

He likes the extra room (who wouldn't). I don't know how well or if it fits in a smaller-than-76 cockpit at all.