That looks interesting indeed, but my quick look at their website left me with security related questions. While the claim not to store any information, and list the links between the client program and their servers as "secure communications", I saw no further detail (SSL?).
Until I was absolutely convinced that the user/pass info passed was not subject to a man-in-the-middle attack, I'd not use such a tool myself (though I fully understand YMMV).
A further quick look at the docs indicates you need ioncube loaders to run their client, and triggers support (not currently available from DreamHost).
These two things alone make it a "I'll pass" for me.
--DreamHost Tech Support