My philosophy is that if I backup the files alone, I don't have a website. But if I have the database I can always build a new site on it.
LB does the job splendidly.
The administration is unorthodox but with the potential of being very fast to manage. The front end is well laid out.
There are no available modules (free version, not sure about commercial version) nor there are connections to the various community scripts.
With a few more features and a better handling of the payment system it could be a contender, but the free version should really be called a "demo"