I got a Opinel mushroom knife with a brush on it and i just don't use it as much as my other knives... i carry a old shaving brush in my pack and find it more useful when needed. The brush is used mostly to prevent a lot of dirt in the bottom of your basket, you can also just cut the mushroom, bring it back to your home and clean it once there.
I really love a small fixed blade like this small puukko, i clip it to my backpack strap, faster to use
There are the other knives i use the most... i could also be any knife in the collection