I've had easycare for just a few months so my answer is 'I don't know yet'

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They certainly seem to be coping with the weather, and whatever grass is still growing - mine are a bit overweight I think - but then it's not really been cold yet, so even at 700ft the grass is still growing a little.
I don't think you need to pick up the wool as they seem to shed individual hairs continuously all year rather than growing a full wool coat and then having it fall out in clumps - anytime I handle them I come away with a layer of white inch-long curls on my clothes. Mind you I've only had them since september.
The exception is the one I posted about a few days back who has lost some wool off of her rump - I've found odd bits of it here & there in the grass. I still don't know why but she's not lost anymore and still seems happy (I think it's started to grow back in - it's harder to see her skin now.