I have no use in all weather.
As I bought a set of alloys off eebay, I had my steel set to put real mud and snow tyres on.
Even with normal "summer" tyres on, the grip is way better than my previous Golf 4.
Once on a dual carriage way, where only the right track was free of snow, but just wet from the salty water, I got onto the inner lane, passing all the normal vehicles that were doing 70 km/h. I was going up to 80 km/h on a snowy/icey lane, with my summers. Once back on the outer lane, I could get back up to the max allowed speed of 90 km/h without problems.
All weather says it all, it suits all weather types, but is not excellent in each one of them.