I wouldn't willingly sleep in one of those...........................ever.
I remember once when we were setting off to walk Snowden by the traditional path from the old hotel (now the Snowden Ranger Hostel) in mid October the guy at the hostel asking if we'd got 'survival bags' and a flask I told him no but I'm taking a tent that'll go up in 90 seconds and 2 down sleeping bags.
He looked at me and said "90 seconds?" so I said "have you got 2 minutes" went outside with him and got him to time me as I went from carrying my rucksack to diving into the tent in 85 secs (it was a Litchfield 'Viper' that goes up 'fly first' with just 11 pegs and 2 guy ropes) he was impressed, but the tent is a 'Canadienne' type not one of these modern 'hoop or dome' types and the inner just hangs on 2 hooks (plus I used to put the flysheet up regularly when we stopped for a bite to eat if it was raining just as a shelter)