I also find it odd that the Triplanar is not mentioned, if for no other reason that with a casual glance at the Talea, you see the trademark VTA tower and tunable weight system of the Triplanar. Its kind of hard to miss.
The Triplanar uses a bearing that is harder than either of the arms in this discussion. When Herb was working with the bearings in the arm, he found that while many bearing worked well, in time the points tended to get flattened from very minor treatment of the arm. So he did his research and found the hardest bearings made. They are not a common bearing, and are made to order. Triplanar got investigated by the Department of Homeland Security, because they are using more of these bearings than Boeing is.
In short, just because it has had the various problems in an arm design worked out longer than the competition has is no reason to write it off!