I can't speak directly for the makers, but I think there will be offerings from a few people sometime soon. One has made both ESB and ROTJ before (very accurate) and the other has only made ROTJ (seem to be very accurate as well). I'll let them chime in if they wish.....
Of course, the only reason I know this is because I need a set of ESB too!!!
the grapling hook and housing are much thinner on the ESB than the ROTJ. There is only one hose on the right ESB compared to 3 on the ROTJ. There are no hoses on the left ESB compared to 1 on the RoTJ. I think that's about it. I could have missed something
whoo hoo...sweet! the temp one I built to make it through halloween didn't even survive the suiting up process before falling off of the gauntlet. I guess that's what I get for using hotglue to hold it on.