I, too, am wondering what the general thoughts are on this.
My boars definitely split after a couple of good latherings, and one of my badgers (Vulfix 374 super) seems to have a couple of split hairs as well, although I haven't heard of anyone else noticing this...
I think I recall an earlier thread on this topic. You might try a search. As I recall split ends on badger was caused by excessive heat and was a very bad thing. Maybe made it super scratchy?