Awesome! I really hope I didn't come across as attacking you/your post, I found it really useful. I just wanted to remind people that the DB wouldn't really be covered by this (except in the case you mentioned where you are dumping the data).

I am definitively looking at this through the lens of where I work where a mysqldump (or equivalent) could take days to complete in full (DB is nearing 2TB in size now). For a number of projects a mysqldump might only take seconds or minutes and would be a perfect candidate for this backup scheme.