thebikechain – spoke to Pat yesterday. They won't be £1500 tho', more like two and a bit. Still will be decent value though as it'll have nice bits on it. Looking at the Salsa full builds and they're doing them with good kit, not basic at all. Allegedly.
Though a tad more expensive I would recommend a Surly Cross Check, I've managed to use mine for racing, commuting and touring round Morrocco, very versatile….
Cane Creek do the mix and match headset thing but when I phoned the importers ExtraUK the other week they had some coming but had absolutely no idea when!
Thinking while I was out riding. I think I've got it now. Lower racier front end. Slacker head tube angle to make it ride like an mtb and not like a cross bike. I think?