Had the replacement s2 frame built with the outgoing s1 parts,
Finish - good overall finish but there are a few dust particles in the clear coat/ paint. This looks better in the flesh if you get what I mean, in the catalogues I really was not that keen.
Ride - I did a 50 miler on Friday which gave me a great feeling for what I was going to be dealing with on the S2. It's a stiff ride yes but numbs a lot more road buzz. Power transfer is good vs the S1, out of the saddle it doesn't seem to lose much power transfer under my 200lbs, not withstanding the quality of my wheels.
On riding it today on a short 17 miles ride to my parents place along the Severn valley it is much more prone to crosswind gusting at the front end, I guess due to there being more material as the head tube sort of trails with the carbon layup. This is much more noticeable compared to the S1. It caught me out a few times, but now I know this I will ride a little more consciously to take it into account.
I will sort a proper build post and pics when I have some time if anyone is interested.