The math seems okay, but look at the tests and how much they had to compensate. If that compensation only needs to be done once i'm interested but if airpressure and external factors are +- 20% on a daily basis, then i'm not terrible interested....
I thought about sending them an e-mail checking this out for the viper. Perhaps they are interested in developing a model with a nicer looking model, the display is hideous. I would not mind seeing something behind a cool satin chrome finish. Perhaps George at MGW can machine a nice look for it and they can get a decent backlit display instead of that boring LCD?
I may have a talk to them and see what they say. Is anyone else interested (i.e. should i post updates here)?