Scott is the owner of the company and the main mechanical design guy, so he certainly knows what he's talking about! I have a new GP as well after trying one out last year, I also have an Acratech Ultimate on my travel tripod. The heads are really nicely made and from owners' reports very durable.
If you shoot in extreme environments they're virtually maintenance free because of their open designs. Right now we're having a bad winter here in New England but no issues with my ballheads unlike previously. I'm sure you'll have the same experience Andrew.