Apologies for jumping on your thread Clarks However, I wonder if Guy and/or the Captain could let me know how they find the leg length on the Forclaz 500s. I don't have an easily accessible Decathlon close by to try them on and it appears there's only one leg length option… … I'm a slim waist (32" max) and long leg (33" min)
I'm no expert, that's for sure. However, I found the following image on the Climbers' Club website, but it's only for the Central Buttress area. It's from their guide book to Ogwen, by Mike Bailey (which'll set you back twenty-five quid). Here's a link to the relevant web page.
This page from summitpost.org also relates to Tryfan and has some interesting information, plus loads of (potentially) useful links towards the bottom.
Not sure the above helps much, unless you've time on your hands to trawl through numerous links.