In reply to The Big Man: I'm sure some people will enjoy this and think of it as an interesting adventure. From my perspective it is exactly as adventurous as climbing any other ladder In any case adventure is only a by product of my main motivation for mountaineering (which is to challenge myself to overcome challenges existing in the natural environment by my own skill, strength and concentration).
If you go to Malham or, closer by, to Creag a Bhancair and see climbers I think most people would think that its pretty impressive and adventurous precisely because the challenge is natural and the skill, strength and concentration required to climb there is so self evidently remote from the everyday (regardless of how it is protected). A via ferrata seems to replace that challenge with an absolutely artificial one which may excite many for an hour or so but inspire precisely nobody.
Certainly if I were to go to a grand waterfall like this the experience, for me, would be ruined by the sight of string of noisy dayglo revellers.
However , I've been to Kinlochleven plenty times and I've never been to this waterfall. I don't imagine the Eas Chuil Aluinn or the Falls of Glomach, or indeed Steall are threatened by such development (and I've been to all of those).
There's no shortage of grandeur and desolation to be had within easy walking distance of Kinlochleven (which after all was the sight of an aluminium factory for years and years).
Its hideously ugly and I for one can't see the point of it - I'm not going to be paying to climb it indeed I wouldn't climb it if you paid me (though to moan about its construction and then demand to use it for nothing seems a bit convoluted ethically) but if we are to build barricades around wild places in Britain to protect their beauty and drama, and to preserve the culture of the generations of ordinary and extraordinary people who have worked and played on them...Well I won't fight and die on this one.