It's been great with my Schwalbe G-ones. They don't have the most volume and are a pretty soft casing so they bottom out easily. The cush core inserts are great for that extra protection. Plus, cushcore was even nice enough to throw in a spare set of valves for me since my rims are too deep for the stock valves.
Last ride I did I was at 21/28 psi and I weigh 175 without any gear.