A quick update so anyone looking who ends up at this thread gets a bit more info.
I now have my large carbon frame in grey, got it from Brink in Bedford who were great to deal with and crucially actually had exactly what I wanted available. Built up with all the bits off my G1, zebs, hope/dt wheels, shimano drivetrain and brakes and a new PNW loamer seatpost as the old one was a different size. It’s 35lb all done without any effort to make it light, 3.5lb less than the g1 was.
I’m up in inners for a few days to get used to it and set up the shock etc. 2 days done and I love it. Transition call it a nimble bruiser and I agree, it’s very playful for the size and travel and I felt at home on it very quickly. Vital review talked of a harsh feeling from the back end but I’m not picking up on any of that (neither is my shockwiz) and I think it’s probably due to fox x2 vs rockshox shock on their test bike.
The spire comes highly recommended from me! Any questions feel free to drop me a pm or post here and tag me in so I actually see it.