I prefer hard glass screen protectors - I've used GGS and Giottos. I dislike the film protectors, to me they're really fussy to put on with the liquid, etc., and I can never get it crease-free.
A thread from earlier this year found a Kenko brand X70 sized glass protector, but only through Amazon Japan.
I've only used JJC for other Fuji XF accessories - they make great replacements for missing lens hoods such as the 18-55/2.8-4 and some thumbs-up style thumb grips. But they apparently also make a custom LCD glass protector for the X70. (eBay Link)