Oh, another note. I had Michelin Protek Max tires on my commuter for a while. A bit heavy and slow, but not a single flat. Also really good traction.
Unfortunately the bike got stolen before I got the tires worn out, but I wonder if the Michelin protection strips are tougher than the Schwalbe layer.
Michelin also makes the Protek Max tubes. An interesting design. As I had already noted with tubes, I like large tubes better than small tubes due to holes not opening up as much, and getting slower leaks.
Michelin takes that one step further and makes bumpy tubes that are supposed to hold the holes closed. Plus a sealant, I think, and they are supposed to be self sealing.
Also in testing by my nephew, I don't have any personal long-term results from the tubes.