Talk about unique. A-Frame Homes are easy to build, incredibly efficient in their use of materials, and they are almost all roof, and nothing is cheaper than shingles.
A-Frame style homes are great in areas with a lot of snowfall as the slope minimizes the snow build up on the roof. Ease of construction and simplicity of design are just two more benefits of the A frame design. Build up of heat toward the peek of the roof is a benefit if you have a sleeping loft.