No I chose the cork for its tactile quality. It's actually quite a nice material to work with also, sands well. The grip is built up from drinks coasters.
Can't decide whether to paint the plastic parts black when finished or leave them raw dark green. Might rework the trigger as well. It's two-stage using microswitches but might swap plain ones for roller ones if I can find them that small because it feels a bit 'scrapey'.