I have now put about 500 miles on the Challenge Strada Biancas, mostly road, though recently taken on some fireroads and singletrack.
I like them, understandably limited offroad (they are still slicks afterall) but fast enough that I was able to cling on to a fast road ride with some mates.
Mostly riding around Sydney, but the last couple of days I have been up in the Blue Mountains around Katoomba.
I would like to try some Compass Barlow Pass though.