I have seen a couple of boar/badger combination brushes advertised. I think one is by Vulfix. I believe Omega used to make one. Has anyone here used a combination brush and what kind of results did you get?
The Vulfix 404 Grosvenor is a great brush, I used mine this morning. It has lots of backbone which was great for working the MWF that I was using, yet it holds enough lather for multiple passes. As said above, they are somewhat of a bargain.