Would a Honda 2000 run 2 sets without issue?
It runs them (so does the champion) but they get warm, not HOT. I've tried it with a Honda as well, it was better but there's a reason why the pro's plug the warmers directly into the generator and don't split it. When I used one generator with one set of warmers plugged directly in the tire was almost to hot to touch and the rim was nice and toasty. When I had them running off an extension cord with 3 outlets the tire was warm and the rim was barely warm, I also always use covers to make sure my warmers are doing the best job they can. If you feel your getting optimal heat with one 2000w genny and 2 sets of warmers, more power to you but personally I won't do it unless it's atleast 3000w, heck even the power from the pole at Shannonville isn't reliable enough to use.