I fully understand compactbgeo.
I’d be very surprised if you could find ANY other frames pushing the compact geometery thing more than these (well the Secteurs even more so). Most compact 61cm frames are 58cm center to top.
The other thing being that they don’t ship ANY 64cms to the UK anymore, the nearest you can get is going into a dealership and ordering a £3000 Roubaix SL4, which is the only 64cm they even manufacture now.
If he can get his contact points into the correct positions, using parts of the geometry which are designed to be adjusted, I can’t see the issue. The idea that he should run a bigger frame, just so he can run a shorter stem and slam it, just for fashion is getting so silly.
This isn’t an arse in the air race bike.