Carmichael throne came in!
Got it today! Took my Ergo Rider top off and put this on and thankfully it fit with no issues. It's a fairly firm seat but I can definitely feel the difference and benefits. My posture and double playing feel much more at ease. I have a sense of balance that I haven't found with any other throne. Hard to explain but this seat is definitely worth it. After a few gigs I'll be able to give a much more in depth review but I say get it to anyone wondering!