I am told that this new system of route marking in the mountains is being trialed in the UK, and is very likely to be adapted throughout Europe and the USA.
I think the most important thing to remember is that, whilst very large numbers of rocks will need to be treated with this paint, the paint will hardly show up in daytime. Only becoming visible ...
Does anyone have the contact info on Bob Coomber? Since he's an avid wheelchair hiker, he might be a valuable source of info for a little project I'm working on.