Weaknesses: Still waiting to see how strong the speed lacing system is. Pretty expensive.
Overall: They're really comfortable and support your feet brilliantly over all ground. Upgraded to these from a pair of Adidas Swoop and the difference is amazing.
Strengths: Great grip, even in really muddy conditions.
Weaknesses: Unless I tape my feet a lot, they give me nasty blisters on any run over 10k, especially in the rain.
Overall: The blisters are starting to fade, and they are fab shoes if you don't want to fall over a lot in nasty weather, but I've had a lot of sore foot days at work after long runs so far.