For me, the absolutely most important criteria is puncture protection. I have direct drive ebike hub on my rear wheel and I do NOT want to fix a flat... especially in crappy weather. I've only had one flat on since I put the ebike kit on. Fortunately, it was a slow leak and I was able to do the tube change in my garage. However, it continued, and I was getting away with just adding air each day for a few days. I had the bike shop change the tube and they inspected the tire, it had a pretty good sized puncture that went all the way through the puncture protection layer (schwalbe marathon plus.) He said I should not be riding it anymore.

Unfortunately, the shop did not carry schwalbe, or I would have bought another as the replacement. I ended up with a specialized all conditions armadillo. I've had good luck with that tire before, but the ride is a little rougher than the schwalbe. It's been fine though... as long as I don't have to deal with a tube changing puncture.

Anyway, with a commuter I just don't want to be fixing flats. With an ebike commuter, I don't care about weight or rolling resistance. Just no flats please.