Without reading all the posts:

Keep a paper log and use LBP to back it up. Endorsements don't mean anything once you get the ticket. i.e. complex endorsement once you get your commercial ticket, since you had to have it to get the license. Plus there is a place in LBP to write your endorsements, if you lose your paper logbook you've got a record of who gave it to you and when. I seriously doubt anyone will have any heart burn for not being able to produce the actual paper one, if you've had to revert to an electronic back up.

Another word of advice, when I close out a log book I keep it in a fireproof save, or a safety deposit box.