I am not a fan of any axe, hatchet, or adze edge grind that has a large bevel on one side and a smaller (back) bevel on the other side. In my experience carving wood works best with only two grinds--either a knife grind (both sides with a equal bevel) or a chisel grind (only one side with a bevel). Depending on the work to be done the angle might change from job to job. One angle does not fit every task. That is why you need a lot of axes, hatchets, and adzes in your tool box. My wood carving these days is mostly bowls, spoons, or sculpture. But, during my working to make a living I have carved and repaired a lot of vernacular log structures, which are actually just very large wood carvings.