I guess it all comes down to semantics ... since TYM is the actual manufacturer, it depends on how you look at it if you call it "custom" or "re-branded". Either way, RK is not selling a tractor they make - they are having it built by a maker who also sells their own brand under their own name.
As to "reps" being on TBN - I guess that all depends on how it is viewed. The guy who owns CycleStop is also on this forum. He is not on here as a rep for his company but often offers comments on threads that have to do with wells ... however, when he does, he is at times roasted because he gets accused of "shilling" for his company since his product will solve the issue a person is having.