Yup, I fitted the Autosocks on my own. Park up – fit over top of tyre and pull down as far as they go. Drive forward a metre or so and pull over the tyre a bit more.
I stopped after climbing the hill I mentioned and the socks were securely fitted to both front wheels. On my tyres, the inner edge of the sock goes over the main tread of the tyre and onto the inside of the wheel. When I stopped in a pub car park to remove then, they hadn't moved at all. Taking off is even easier than putting them on.
The socks seen on the road might not have been fitted properly or people have gone over the recommend speeds.
You can't really not recommend something you have no experience of, can you?