Strengths: Reliable grip in mud. Light feel. Easy to clean and dry. Let your feet breathe. Easily adjustable fit.
Weaknesses: Slippy on wet rock.
Overall: A fantastic off-road running shoe, its benefits far outweigh any negatives. I've run in underfoot conditions that have stopped my running partners due to their shoes not being able to find grip.
After a muddy section I'll look for a puddle or stream to run through to clear any debris and I love the way the shoe 'pumps' the excess water out through the fabric of the upper leaving the feet relatively dry straight away. I also love the easy maintenance a quick rinse and leave them out to dry - superb shoe.