Yep - and MTH's is not really "wireless". But, I dislike all of them, even though I've never had a Lionel IR tether give any trouble - except, when you need to shorten the drawbar (and I usually do), it takes an act of whatever to get it done. Old-type drawbar? Drill another hole.
The thing is, real steamers have all sorts of connections between the loco and the tender: drawbar, of course, plus various combinations of air, water, steam, electrical, coal stoker "tube" (if so equipped) or oil piping for oil burners, and this "advancement" is actually a missed modeling opportunity, and a modeling stumbling block. If a real tether (which did not have to loop to the sky like so many MTH ones did) is constantly causing one problems connecting it, one is separating locos and tenders too often - really.
I don't think that a pair of big boxes on the drawbars, or a plain, flat circuit board look particularly good.
