In reply to GridNorth:
> You can't make sweeping statements like that which may in any case not be true. I don't see many at my local wall but if you go to Kalymnos there is hardly anyone without a pair.
Of course you can, that's the whole point of generalisations, they distil individual episodic experiences into meaningful observations about trends.
The question is always how accurate or not they are, single instances of counter examples don't make the generalisation less true, they just make them harder to spot.
I've never been to Kalymnos, preferring the fleshpots of continental europe but I've heard that the locals speak english with a cockney accent because of the number of southerners who journey there, even the restauranteurs greeting customers with the tradition 'Awl-wight mate, ows it anging? Table for four Squire?'
The shortage of local rock in the south of the UK meaning that even those who use their glasses outdoors at Kalymnos probably use them more indoors rather than outdoors on their 7 day 'outdoor climbing experience'.