
Not a Dropbox replacement... yet!
The major failing of this "solution" is that there is no mention of synchronisation. Anyone (world+dog) can build a webdav server and allow upload / download of files from an internal or external IP (or DynDNS address) using HTTP over pretty much any device. The flexability that you get with Dropbox (and alternatives) is that you choose which folders / files, in "your cloud", you wish to synchronise to what device(s).