I also have a orbital hilmor and it works great. I have an old cps imperial style thats has always worked well for me but the orbital with the clutch and depth gauge makes it almost fool proof or as we in arizona call it chase roberts orangutan proof.
That ratchet drive attachment on the CPS looks like a great idea. More than a couple of times I've wished I had 6-foot arms like an orangutan for flaring anything over 3/8" tubing with my YJ. It does seem to take a lot of forearm with the short handles they put on these eccentric flare tools.
I ended up ordering the Yellow Jacket Deluxe tool and have yet to use it since I had to buy a mastercool eccentric flaring tool(which looks just like the rigid one above)on my company's account as an emergency before the YJ arrived. I have to say the Mastercool one worked great and I'll probably send the YJ Deluxe back.