This is something I've considered. Going to Arnett/Gunson for a consultation, then taking it to someone cheaper, but not a bad reputation for like a 25k bimax. I just don't have close to six figures to pay Arnett/Gunson, but I want the best face I can get. I hope a surgeon wouldn't be pissed if I brought them some other surgeons plans and told them "this is what I want''.
The trouble with Gunson is that he's at the sophisticated end of the spectrum. His plans are complex. He tries to get it absolutely right both functionally and aesthetically, so may do extra work where other surgeons will say "close enough is good enough" i.e. all is good as long as the bite fits. It's one thing to take his plan to your "local best guy" and be rejected outright. It's quite another when he agrees and does something different without telling you.
For example, CCW rotation can be accomplished by anterior impaction and posterior down grafting or a combination of both. Gunson is famous for being able to do the latter really well. Most surgeons don't do it either because they believe it to be unstable or, more likely, because they simply can't and just use the instability claim as an excuse.
Some claim to be able to do it, but don't. You could see such a surgeon, who'll say yeah, yeah, I'll impact you a little at the front and downgraft you at the back just like Gunson's plan says. Instead they will only impact you, achieving a modicum of CCW and as long as your teeth fit, they are off the hook. Because a fitting bite is the one and only thing they can be held against. Remember,
it's easier to ask for forgiveness than permission, especially if they simply refuse to see you. At the end of the day it's a business, and they want to "process you", whether their treatment is appropriate or not.