Not sure about the steamroller, but I have catalysts on a bike and love them. You are almost guaranteed toe overlap which can be a problem fixed. These are so long, you might have pedal overlap on some bikes. I am really liking the mid-foot pedaling. I no longer have cramps in my calf the night after a long ride due to using my full foot, not just the ball that all other pedals encourage.
Tom Palmer
Twin Lake, MI