Originally Posted By: hikermor
I usually carry the bag, figuring I could always slit it open if I wanted to use it as part of a shelter.


My reasoning exactly...

Originally Posted By: hikermor
Of course, you could always tape a blanket into a bag.


This is where I start to disagree... Taping a blanket into a bag isn't something I would plan for. Fumbling with flimsy heat sheat material and tape when it's raining, blowing and my hands are shivering... Nope, not my kind of fun. This is exactly when a pre-made bag really would shine.