I'm gearing up for a hike and because of the length, I've decided to use my butane stove, for the first time on a hike. from my readings, it seems that not too many people bother with a h.s. for this. while with the alcohol set up, it's almost a requirement. Is there any gain in using one with butane? I have a heat shield that I use with my alcohol stove and frankly it could be cut in half and still work with either stove. put another way- can using one save butane fuel to any appreciable extent?