Micarta hard to keep clean?
That all depends on what kind of micarta (canvas, linen or paper) and the finish it receives.
Paper micarta, when sanded to a fine finish, has very little to no fibers left sticking out beyond the laminate.
So, it can be kept clean very easily with a damp rag.
Linen micarta, being a slightly coarser material can also be sanded to quite a fine finish.
However, when it is left with a coarser finish to acheive a grippier surface; fibers are left sticking out through the laminate. These fibers are pourous and will absorb materials like the oils from your hands and become dingy or slightly dirty, which will darken the material.
This effect can be remedied by the applying the cleaning methods mentioned above.
Canvas micarta is the extreme of the three where as the fibers are concerned.
The finish will determine how easily the handle will be to get dirty or to clean.
The coarser the finish, the better the grip, the easier it is to get dirty.
Again the cleaning methods mentioned above will work fine to bring it back to it's original look.
Canvas micarta can also be sandeded to a fine finish, which will show much more detail in the material.
However, this decreases the grip dramatically making it more smooth and slippery.
With a fine finish it will also have less fibers sticking out so it will stay clean longer and will be easier to clean.
It's a trade off.......
The coarser the finish, the better the grip, less detail visually, gets dirty/dingy more easily.
The finer the finish......not as good of a grip (texture wise), much more detail visually, it doesn't get dirty as easily.
It really all depends on what you desires are.
I prefer my micarta rough.
That way I get great grip and it ages like a pair of jeans would.
But, that finish isn't for everyone.