I had them on my old 300. Were brand new for the Llandow trackday!
Matt had recommended to somebody about trying them, if I remember correctly. So I thought I`d give them a go.

I had the soft compound front & rear.
I thought they were really good, didn`t take much scrubbing in. Plenty of grip & feel.
Did about 200 miles that day. Was still able to use them around town. Sold the bike with them on too.