Well, I can't say why he's not a member on here, but having been privy to the pictures of the process from very close to the beginning, I too can vouch that it's not a recast from a movie sized helmet--if it was, it was the worst recast I've ever seen! 
What details are you fearing are recast from the MSH helmet exactly? Or, what areas couldn't be found in pictures, because I've got about 5 pictures on my ref CD from just about every possible angle!
How did he get the size right? Well, let's face it, you're making a helmet. It's gotta fit on a head . . that gives you a pretty good ballpark to start in! hehe I've compared his dimensions to my MSH and, like I stated above, he's about a full inch bigger in length.
You were questioning the keyholes . . well, I like to think I've played a bit of a part in that, as I asked him if he'd be willing to do a keyhole area that would fit my movie sized helmet (I dont' have the talent to do it, or else I would have done it myself), as I'm not happy with the keyholes as they came (about my only beef with the bucket too, I might add)
Anyways, hope that helps shine a bit of light on the situation, and calms any fears that it's recast or anything like that. There's no funny business going on . . just a talented guy makin' a bucket with a lot of input to help get it to what you're seeing the pictures of.
Jer
