thanks Dave,
why didnt i think of searching...
the inside of my tube looks more like a cross between matte and gloss, i gave the tube a clean out today while i had the primary and secondary out and you can clearly see its changed the finish on the paint.
i guess i just assumed that felt or similar would be better than a paint
the dust isn't a big concern for me as i regularly have to clean my mirrors anyway, since i live near the sea its a really bad idea to leave any dust on the mirrors for too long or it will just eat right through the coatings.