We used to have a SDB, but it was costing us ~$50 a year so we cancelled it. i have originals at home or the point of contact to get an original in my files, (i.e. email or phone number for our schools, state agencies, hospitals, etc).

I recently started a online SDB. I've color scanned almost all our important docs. I created a obscure email account with an online company and attached the scans to emails that I leave in the Draft folder. That way if I ever lost my driver licence, passport, or say whole wallet, using my iPhone or computer or I could access the account from anywhere in the world to get a copy out of the Draft folder. I've been told a clean copy will suffice an initial interaction with police or govt agencies if exigent situation exists.

its basically a poor mans Carbonite dot com.