Been wearing a pair of these now for my last few trips and so far very impressed!
VERY lightweight and comfortable! Warm, but not too hot. Bought as a lightweight, summer boot and seem perfect. Haven't tested them in the wet grass yet, but being goretex lined they should perform well. I'm not sure if you can get them here yet? I had a friend bring them back from USA for about 75 quid. First impressions are very good. Look like they will last longer than the Jackal Mk I's which had suede as these are hard wearing cordura type material. Extremely quiet to walk in too!