One of the benefits of DE shaving is the economical aspect, so it's not really a necessary thing unless you're a fan of carbon steel blades (which can be rehoned many times). For uberpricey carts, sure, it makes sense. Does it work well? Don't know, but it's one of those things that just seems too good to be true...like a lot of that "As Seen On TV!" crap. Even if it does work, you're still stuck with crusty dried up old lubrication strips and whatnot.
