Any question answered...

I have had experience with similar cases that have ended up with tiny grains of dirt or dust inside it and marked the back of the case pretty badly, this might be a better quality one and might prevent that. Plastic sandwich bags have always been a winner for me protecting IPhones in all sorts of conditions mainly when out on the MTB

Does anyone have any experience of the Lifeproof iPhone case?

http://www.lifeproof.com/en/iphone-5/

They're quite pricey but I think they'd be good for cycling with. Perfect for Strava/maps/gramming in any weather condition? Should survive the ocassional fall, too.

I've been considering one since my phone nearly drowned on the ride to Brighton on Saturday despite being inside a "waterproof" jacket.