I recently rode Seymour with the Magic Mary SG's but used the soft compound rear and ultrasoft front. I was super impressed. Day was cold and wet and even riding the wood features the tires were amazing. I did find that I ended up being able to run lower than normal pressure (17psi front, 19 rear) and the sidewalls are so strong that there was no wiggle  or squirm. I also pinged off some rocks and no issues. I feel like Schwalbe has really upped their game !