If he gets it fine-tuned it will fill a very open niche, i.e. an open-boiler lever, not to mention a steamer. We've been waiting for it for around 5 years, since our early discussions on the benfits of open boiler machines.
If I had had the brains and wherewithal to design it I'd had flipped the lever mechanism over and added a spring. The one could pull shots and steam at the same time.
Hand-ground, hand-pulled: "hands down.."