photos from our trip about a year ago are here
http://www.flickr.com/photos/26693195@N03/sets/72157619422288538/
very scenic double track with not a lot of technical riding. Definitely one for good weather. Personally I thought the descent that Stuart refers to was the (tech)riding highlight tho I can see that it wouldn't be to everyone's taste. the opt out that Stewart referred to is now a surfaced path and would be quick finish but zero fun. We did meet a bearded ancient who thought he was safe from the dreaded MTB and was not happy with our presence ! The descent was tricky enough that the bearded wonder nearly overtook one of our party despite his advancing years.
Couple of navigation pointers –
the turn at Kinloch – just before point 3 in Kenny's book is easy to miss – tho you get the bonus of playng on the beach in my photos 😀
the river crossing at Point 5 after the climb from Pattack is the one to watch out for – you are descending on a fast sweeping path and could easily go flying by the crossing not helped by a very vague path on the other side. Mind you once you cross you might wish you had stayed on the descent – the climb to the Bealach (in Kenny's photo) is a pretty tough grind
(Edit) The only "sludgy" bits will be on the climb to the Bealach – not likely to be affected by snow melt. How much of the ascent you can ride depends on how strong you are – but it is only a couple of k to the top. From the Bealach there is a good track but as Stu says it gets a bit vague and boggy once you are on the descent – keep heading towards the river and you will be pick it up if you look carefully – it gets less boggy but more technical.