I have a pair, got them in October. Very comfy from day one, warm and waterproof, traipsed through mud and floods and didn't leak. Quite bulky to ride in, but ok for hacking. Only down side - they are not very breathable so tend to make my feet sweat on hot days. Hope that helps.
Not so far, they are quite baggy around the ankle, but I think you need this to get them on and off as there are no zips. Have had no problems with them. Equestrian clearance had them for £79 recently, may be worth checking out