In reply to andyinglis:
@Andy, Sarah Huekinen, Will Gadd and Angelika Rainer all claimed Steel Koan it to be M13+, so that's the grade I took. Will Gadd says Musashi is benchmark M12 in the world (although I thought it was soft), Steel Koan is miles harder than Musashi, so I think 13+ is understandable. I only climbed about ten M11 and two M12, so I can't really compare, but Steel Koan is way harder than Guardian of the underworld M12 at the Works, that I did in a day and Jeff told me was M13. Steel Koan took me 3 days. So I'm confused Jeff says is only 12+? Mind you, not even the locals know where the route goes, so maybe he did the easier start on Rocky Mountain Horrow show which people do, that's why I made a topo of the crag as there no source to check.
No heel spurs mate, I've never used them, not my style. it's the back crampon piece so I can climb multipitch routes in my comp boots, standing on ice ledges is rather tricky with a rubber heel...