Used the Bibler I-Tent for 3 nights. This tent is two pole, stand alone & made from waterproof ToddTex with two small closable vents in the roof & one door with an extra noseeum mesh door layer. Poles are mounted inside. An optional vestibule (recommended) is simply attached to the roof with clips & ground pegs then supported with a pole inside.
All dry nights but did have the hose on it before taking away to test the integrity of a mark on the wall. Had no problems with any moisture getting in.
All night were cool to cold. First two nights on shore of Lake Rowallan left door open but fly screen zipped for venting. Some condensation on poles (no prob), dry walls but down sleeping bag mildly damp on top. (Bag too warm for conditions?) Third night at Pine Hut anticipated very cold night with possible rain. Zipped up 2/3rd of door over zipped fly screen. Bad move! Wasn't too cold & no rain. Walls were just slightly damp inside as was the top of my sleeping bag.
Setting up was only a problem as assembly is inside & the fear of breaking poles or tearing the fabric on this borrowed tent made me very nervous.

But erecting & collasping is very simple. Fabric of walls/floor & poles are tough. It is only slightly bulkier than my other MD Positron & it is slightly lighter even though it about the same size.
In hindsight, probably on all occasions I should have left tent &/or vestibule door open in this weather. Yes, it does get warm but I did have gear to keep me really warm at night. I think this fact alone would make this a great tent for extreme cold contitions. I'm looking at the Bibler Tempest which has two doors/vestibule which gives greater venting options. This is certainly a high end outdoor use tent. It would certainly make you feel safe in the conditions Tassie could throw at you but as blacksheep said this is more of a mountaineering tent. You have to justify cost & use in our conditions. Having said that, the two Tassie owners love their tents & would buy the ToddTex tents again. I am still very tempted.
lyndoor