and a nice Compass or Panaracer tire feels better than any Schwalbe, even with tons of weight on the bike.
Possibly, I've never used Marathons to compare, but a sliver of glass which was almost too hard to see when removed from the tire defeated my Pasela PTs. I've never seen a need to use anything else for everyday riding, but that is hardly "tough". I rejected them when I was looking for a tough tire to take on a remote tour on rough rocky roads.