I've been looking at my old brushes at paint tool sai 1, and i've found this kind of chalky oil blending brush that looks kinda cool when you know how to blend it. I made some changes and this is what the 2.0 version can do if you know how to aply it correctly.

Comment if you want the config of the brush so you can test it by yourself, the texture and feeling is pretty weird though, like drawing with chalk, an Oily and blendy chalk (don't know how to explain)