In reply to LakesWinter:
> And to the OP, think we saw you at beeston, nice to meet you. The moves on mantis don't have enough risk of mega death to get grit E2 and there's only 1 5b move iirc, still E1 though not HVS as it used to get.
Good to meet you at Beeston as well. I presume you were the team on Pocket Symphony.
Still not much support for my suggestion (as I expected really).
I've always thought, and this is supported by other commentators, that effectively the UK trad grading system has a 5 point scale of risk underlying it. Take HVS for example. The range of technical grade normally associated with HVS is from 4b (Sunset Slab) where you risk a fatal accident if you fluff it, to 5c (several examples above) where you should be able to fall multiple times with abandon with no significant risk of injury. HVS 5a is the standard for adequately protected routes. Likewise E1 5b, VS 4c etc. This breaks down around E3 6a but I think most people acknowledge that the UK system is not really fit for purpose outside the S - E3 range.
So if Mantis involved a risk of "mega death" I would expect to see E3 5b - two notches away from standard. The grade I'm suggesting (E2 5b - one notch away from standard) suggests a risk of injury greater than the average which you would expect on a standard E1 5b. I think that's about right. Though I appreciated it's not the norm for gritstone grading of similar routes, I think it is reflected elsewhere in the UK.
I appreciate this analysis doesn't take account of how sustained the route is which the UK system normally incorporates into the Adjectival grade. (I would argue it would be better incorporated in the Numerical grade which was what was originally intended - my 1976 Cloggy guide says "the numerical grades refer to the difficulty of top-roping the climb and so the strenuousness of the climb is an important factor".)
My own feeling was that there were two or three 5b moves on Mantis before the break and first gear but I may not have gone the easiest way.
As for Fiend's comment "top roping easy routes is pure bollox", I'm impressed your standard is so far above mine. I thought Mantis was bloody hard, top-roped or not.
Martin