I'm not sure if this is possible...I haven't tried it yet- but I am very curious. My local cake/candy supply store sells blocks of pure cocoa butter. Do you think it would be possible to buy a bag of white baking chips and add this cocoa butter to it, then pour over the scalded cream and have it actually set up like ganache? Cocoa butter IS the main concern with why we actually use real white chocolate instead of the chips, right? Do you foresee this working, or just being a waste of $10?!
I just use the Baker's White Chocolate squares. The white 'premier' chips are just vanilla flavored candy..as you said...no cocoa butter. I'm not sure about adding the cocoa butter to the chips though. Personally...I hate those white chips...they taste funny to me.
It would probably be cheaper to go to Wal-Mart and just get the Baker's rather than buy the chips AND the cocoa butter.