Vitaliy M. wrote:mistdaemon, you think it is convenient to have a two sleeping bag set up (one inside the other) and sleep without your clothes(which will be cold in the morning)? How many times a night do you need to wake up and vent? What if you oversleep and don't vent?
You are incorrect, please don't make claims as to what I think. My sleeping bag has the VB built into it.
You need to wake up the same amount of times to vent regardless of whether you have a VB bag or not, but if you don't have a VB bag it means that all the moisture is going into the insulation and it does not come out as easy as you would like. The fact is that you get used to it and know what to do so that it becomes second nature and you don't even think about it any more, but I think you are still more aware of the need to properly vent, both with a sleeping bag and with clothes.
When you are learning on how to deal with a VB, you will get hot and sweaty. The first time I used one it was horrible and I said I would never use one again, but then in doing some research (curious) I realized my mistakes and tried it again, then I bought my own.
Morning is really not much of an issue actually as you have some time in which you will still be very warm when you get up. It could be because your body greatly reduces the sweat needed to keep your skin moist, so until your body realizes that more sweat is needed for the skin, you can get dressed and be warm.