Does not have the dimensional look of tile or shake. Somewhat subject to blow off in high winds. Can sag on steep roofs, particularly if hot. Correct nailing helps. Doesn't have the life span of tile.
Shakes are the best choice for a natural look with a lot of character.
With skip sheeting it will let the house breath, air will circulate with the small openings under the felt rows. A lot of character. No two shake roofs will ever be the same. Variations in the wood like color, width, thickness, or cut, assure each roof will have it's own look. Good insulation properties.