I don't have any direct experience. But since no one else has commented - I had considered him for use on simmentals. Info I had was good feet, good udders, calving ease, and lots of mass. Concern I had was frame score. He appears to be small framed in the pics and videos that I have seen. I never saw any published yearling or mature frame score. Looked to be a little sway backed, but lots of mass. Hopefully, someone with direct experience will comment.