I've just used the Plasti-Dip on my stick.
It does greatly improve the grip and with it the amount of travel you need to do to press a direction doesn't seem as bad when you've a better grip. It took about 4 coats for me to get a coat thick enough to feel confident in it lasting (although the rubber does seem quite resistant). It took 5 minutes between coats and then an hour afterwards for it all to set. It's possibly not work 15quid for just using on the GP2X (unless the lack of grip really bothers you that much) but if there're other things you'd want to dip in it, it's probably worth it
I'm now trying to figure out how to improve the stick so it behaves as well in every direction as it does when the stick is slightly pulled out.
It does greatly improve the grip and with it the amount of travel you need to do to press a direction doesn't seem as bad when you've a better grip. It took about 4 coats for me to get a coat thick enough to feel confident in it lasting (although the rubber does seem quite resistant). It took 5 minutes between coats and then an hour afterwards for it all to set. It's possibly not work 15quid for just using on the GP2X (unless the lack of grip really bothers you that much) but if there're other things you'd want to dip in it, it's probably worth it
I'm now trying to figure out how to improve the stick so it behaves as well in every direction as it does when the stick is slightly pulled out.