Yeah, sorry. I get the linear view of the BBS and just started typing in the box at the bottom.

Anyway, one other useful data point is the way Apple engineered its battery pack for iPhones, perhaps to avoid Mophie's patents. Of course, you'll never get anybody from Apple to confirm that this was the plan, but it all seems to make sense.

Consequently, if and when Apple decides they want a proper client-side copy-on-write snapshotting filesystem solution, they'll make it happen.