Purists (a breed whom AW understood well) will probably argue that the only genuine article is the original set of seven Pictorial Guides.
If they do, they are partially missing the point. The original guides are the core, and literally the source, of many of the Wainwright books which followed them. This is one of those books. Wainwright's text is enhanced by a smattering of his exquisite draughtsmanship, and by the beautiful Derry Brabbs photographs. In a recent TV interview, Brabbs showed that he has a good handle on AW's strengths and foibles.
As a very average fellwalker, and a late starter, I yesterday reached the point where I have completed half of the 18 walks in this book. The book was the biggest single inspiration to get me this far. Someone on a recent TV programme (this may have been Derry Brabbs again)called Wainwright a "trudger". Nothing wrong with trudging if it gets you there, and you use the experience to enthral generations of trudgers by your description of the routes.