My preference would be to just re-work my wardrobe to have pockets sufficiently large enough for the PRS-505 --- I've a number of shirts from
www.travelsmith.com w/ a pocket perfectly sized for the 505 (unfortunately they've since changed the shirt style to have smaller pockets ::grr:
--- so I guess I'll have to go back to having shirts tailor-made as I did in the Newton days.
William