In reply to peebles boy:
Having both books in front of me....
The Cicerone guide has 16 routes at Lurcher's (but not all of the 12 in the SMC guide) and 2 photo topos which are very similar to those in the SMC. Both books are in agreement on the locations of K9 and Window Gully, I think confusion is down to 'user error'! It can be a little tricky to find the correct route as some do look quite similar from below, especially in poor visibility, and the approaches don't give you a long head on view of the crag on the way in.
So probably not worth buying the Cicerone guide just for the extra information about Lurcher's.