Quick update.
Not ridden them off-road yet (stupid foot…) but riding them down a really steep hill has revealed they they are a different level of ridiculous when it comes to power, but well modulated enough to not punt me over the bars at the first hint of squeezing the lever. Seems they have gone live on the website too, just a 9 short month lead time…
As for if they are worth the wait/money, probably not. There are plenty other brakes that are good enough, for 30% of the price of these, available straight away. But these are, by some distance, the best looking, best feeling and most powerful brakes I’ve ever used.