I fitted swisstop green on both wheels this summer, from standard black ones. The difference was instant far better braking than before, but you need to be going fast to benefit properly from them as they need heat build up for them to work properly IMO. As for wet weather use, they lose performance especially at low speed.
These are on miche looky likey tektro caliper brakes on ally rims. Wear seems to be better than standard, so good value.
As for wet weather use, I have cheapo Clark's red and black ones on my trekking bike with v brakes, great in wet and dry conditions. Again on ally rims.
@ jhob, Aren't blue swisstop for ceramic rims?