I got a tube of this from Mankind.co.uk before I started DE shaving. It's not quite the be all and end all that the manufacturers and distributors make out, but I got a decent enough shave out of it. Bear in mind though that my only point of reference at that point was canned cra... I mean foam.
The fact that you don't use water at all though is somewhat counter intuitive, and I dread to think what it could do to your face if you found yourself with a bad blade in a more open razor.