With raintyres on a dry track TT-Assen

Rain tyres on a dry track.. a good choice? no, but my rear tyre was a Conti, not the best rain tyre in my experience. So use it in this conditions. The track was dryer as before. But after the session the tyre looks very well. Maybe is this Tyre a good solution for intermediate. Bike; Yamaha YZF-R6