In reply to Jamie B:
Having got a copy of the book, I'm very pleased of its publication, as there are a lot of areas and routes covered which I'd never have considered without it.
I'm not sure the argument of such venues necessarily being looser or less safe than the trade routes adds up; e.g. the routes affected by recent rockfall (Pygmy and Fingers Ridges) are hardly undiscovered.
While I've yet to use the new guidebook on the hill, I've done many of the offbeat routes from Iain's previous Highland Scrambles North guidebook, and never had any issues with unexpected loose rock or lack of seriousness conveyed in the route descriptions.
From the perspective of an independent scrambler, I think the SMC's series of scramblers' guidebooks are spot-on, including the helmet-less photos of the easier routes; this is how most independent scramblers go about their chosen pastime.
Whilst I'm hopeful the amendments will be beneficial, it would be a shame to get to a point where whenever rockfall occurs in the future, the relevant guidebooks have to be pulled from sale and have new passages inserted encouraging people towards the use of guides or instructors.