Good news for everyone who has been holding out for waterproof grips.
They are here now.

Hunter Design Group is immediately converting to a new
shape-conforming water-proof foam grip cover. All future Hunter
FlatBars will be shipped with the new waterproof grip installed. They
are the same thickness, made of skinned, closed cell EPDM (black
rubbery stuff) that can stand up to sunlight without degradation.
There will be no price changes.