I have had mine for about a year and a half and I wear them all day, every day for work. They are soooo comfy and my feet stay warm even in the coldest weather. The laces did breaka while ago, but i emailed Ariat and they sent me some new ones straight away. Because of the laces, they are totally adjustable, so if you had wide calves i think they would be fine.
yep fine for wide calves, mine arent massive but bigger than those lovely really slim riders so you should be fine. you just pull them off and one well thats what i reckon so you only have to loosen the laces.