I had another look at the video, a 1 hour download on my dial up modem...., and you are correct, there is some vertical space at both ends.
I know that Glen uses his ThinLite mat but for the ones that use a thicker mat, particularly the tubular types like the MaxThermo , there would be not that much space above the head if you are of Glen's size . (could be ideal for me and I wish all of those abnormally long people would stop winging about tent sizes).
One point to consider is that most of the condensation comes from one's breath, so the closer your mouth is to the fabric, the more condensation you will have. However looks like there is plenty of ventilation there. Of course people will complain about the wind whistling through....
As far as rain is concerned, after my experience in Nepal where rain was thick,hard and lasted for hours, I really cannot see any problems with the Contrail. Never had snow on the Contrail but a layer of frost over it . Using my mid rear pole guyout it was still taut in the morning , so no sagging there. But it was not designed as a winter tent.
Congratulations to Brian Van Peski. Great production.Informative ,entertaining and nice close-ups.Still looks good on full screen.
I would like to point out, for the ones that don't already know, that since I use and like the Tarptents I am biased towards the brand ( really ?, no kidding !) but then again Glen would not sell the Squall Classic if he did not like it....
And, yes, I do think that the One could be THE ONE for many.But the year is young...