In reply to Rick Asher:
The point about the snowfields is a valid one. However, late in the season (i.e. September) I'm not even sure if there is any snow left. Last year on the descent from the north ridge, I encountered a couple of Spaniards who had climbed the Cassin with what looked like cragging gear. They had running shoes rather than boots.
As far as conditions now are concerned, the top third of the face has quite a few small snow patches still on it. The middle third looked wet but drying faster than I expected. The bottom third I can't see from here. This bodes well for your plan. Good places I would check to see if there are any trip reports are the following:-
http://www.hikr.org/
http://www.on-ice.it/onice/onice_reports.php?type=0
http://gipfelbuch.ch/gipfelbuch/touren/clear/all
Not often in English but usually the odd picture is posted.
Another point of information worth repeating is that the Viale path between the Sasc Furä and the Sciora huts is closed until further notice following a gigantic rockfall from the Cengalo last December.
Hope this helps.
L