I have regular marathons on my road bikes & they're just great, but the one pair of plus I bought for 26" were too rigid at the tread, too soft in the sidewall.
they made for a wobbly unnerving ride. they're hanging in the carport with less than 5 miles on 'em.
I wouldn’t run them unless you absolutely need the highest level of puncture protection. However, if you’re commuting you really don’t want to have to deal with flat rear tire with a rear hub motor. Talk about a PITA to change out the tube. It takes me 20-30 minutes to get the rear wheel off/back-on in the comfort of my living room. I can’t imagine doing it on the side of the road.