Thanks guys. Really useful links, nice one.
Dom, all good with you?
I have ordered one of these from the U.S., not expensive but useful for other stuff I do too.
http://www.lanskin.com/index.html
Hi Alex, yes worried about the phone getting free of the x grip, not the ball joint itself. I'm fairly confident that it wouldn't go awol but I can't have a situation where the phone slips/moves and I'm suddenly reaching for it when I should be keeping fixed on the road. Piece of mind really.
I pondered the waterproof case option, and may still end up that route, just a little bothered about the phone overheating, as I've read it can happen. That waterproof case with ball joint is a good option, thanks.
Bagwafu- I looked at the telfriezer offering, and went with the hornig yoke mount instead. I had a 'screw in' mount previously and found that it was not best suited to being removed/reinstated a lot because the mount needed enough torque to keep it fixed which then became a problem getting it out (that was my experience). The hornig mount uses an Allen key bolt through the ball joint to create an expansion joint in the centre tube which I think I will get on better with, as I will be using the mount on two bikes, it will get moved about.
I will update the thread when everything is on the bike.
thanks again, very useful info.