HEY! I just reckymembered sumthin' from one of these sites' forums.

A backpacker said that using a VBL in your sleeping bag would lessen the amount of frost inside your tent. Yery astute observation.

Personally I'd LIKE to use VBL clothing inside my bag instead of a VBL bag liner. The clothing could then be a multiple use item. But... methinks too much vapor would leak out of the neck and cuff areas. Thus a bag liner would seem to be more effective.

Eric