I've never slipped in the wet 'touch wood' and don't drive particularly slowly........ Ice is the only thing that's caused me problems so far in two years. Going over a wet manhole cover or something can feel slippy but that's all.
The weather is crap - my car was immaculate in the garage last night - rained all night, got to work and its filthy, sun is now out and shining and baking all the crap onto the car, i'd rather it was still raining, at least it wouldn't look like I had a dirty car then on a nice day........