Yeah, I think the pokey part is supposed to be the “exfoliating” characteristic of the boar brushes.
This model is the 04312 Cachurro. Someone online said it was 50% mane, 50% tail, but not sure where that information came from originally.
Actually, it's 75% tail to 25% mane for that model. I have one of those and like it as it is a very versatile brush. In loading the brush initially, I scrunch up on the hairs with my fingers to give it more backbone, then back off and load more gently in holding the top of the handle as the lather starts to build. Also, with horse hair brushes, I only soak the knot for around 15-30 seconds as a longer soak will cause the hairs to clump together.