That's actually quite scary...
But yes, I confess, I'm that cheese_dave. For the record, the razorpit did exactly what it said it would. It extended the life of cartridge blades at least threefold for me. I'd say it paid for itself. However it's been stuck at the back of a cupboard with my one remaining Fusion for a few months now, and I don't expect I'll be using either of them again.
Can't a man make a mistake and then see the error of his ways? Friend-o?