I normally wear an ex-RAF fireproof suit with my WFAeC badge on.
I know it looks silly in a small microlight, but I don't care.
It's warm, fireproof, has lots of pockets & pen holders and the plastic chart pockets on the legs are useful; 1 side for the AFE info and the other for scribbling down the QFE etc.
No need for a knee-board.
Rans.