I tried it few months ago and was not impressed. The installer hung on the first run. The app itself crashed. When I tried again in a week they seemed to have a new version and that one actually launched. However it looked completely foreign in Windows as if it were written in Tcl/Tk or some other cross-platform oddity. I clicked through the UI, tried to initiate the file transfer and then gave up. The reason was not that it didn't work, but that it looked as a half-baked product that shouldn't really be let out, even into the beta. You'd expect to find something like this on SourceForge, but not in a form of a commercial security product. It just wasn't trust inspiring :-|

That said I realize that they could've redone the app from scratch in past few months, so take the above for what it is - an impression from a beta.