It would be cool to access your vault via a website interface.
This is good for occasions when you are not around a computer with safeincloud installed (or have your phone on you). This happens more often then you would think!
1PassWord has this called: 1PasswordAnywhere
A secure Web app would be more than cool. It's essential.
Wernfried Domscheit commented
Beeing on the way without having my smart-phone with me sounds very unlikely for me. Nowadays some people take their phone even into their bed.