For Tuscany, try reading the "Riding in Tuscany" thread. Towards the end there is also a report about a trip to Sardinia. The author is away right now, so it will be a while before we can expect this excellent report to be continued.
As for Dirk, it's been a while since he posted. You may be better served with a PM to him. Also, for trip planning purposes some people find the Horizons Unlimited site helpful....although for ride reports ADVrider totally rules sans doubt.