I'm in the middle of my first Vaultpress backup and it's been almost a day, with what looks like another 3-5 days to complete. It's "evaluating" the tables row-by-row. Slowly. I'm terrified as to how long a restore will take. I'm trying to get an answer there on that now.

In searching around for another solution, I found BlogVault. It looks terrific, I'm wondering why you have not covered that product.

(By the way, what plugin do you use for this nice comments entry? It's great.)