I used this with my team-mate in the 2007 OMM. The mid camp was typical: wet and windy! I agree with Graham that the mesh inner won't help you keep warm in those conditions. However, I mustn't notice such things when I'm in OMM mode, as I was quite comfortable in my 300g down filled sleeping bag and my lycras, although admittedly it wasn't cold for late October.
It was very easy to put up, the poles being all joined together in a 'stick man' shape, with very 'self-evident' orientation to the inner.
What really impressed me was its stability. It's not enough for a tent to stay up in windy weather if it bounces around so much it keeps you awake. The Seedhouse stayed pretty still throughout the night and also didn't let a drop of water in.
I'm 192cm (6'2") tall: there aren't many tents out there that are this light and could sleep two people of my height without them having to bend their knees or 'spoon'.
Superb.
(Written by: JastheBass)