This is true, Aquamist did not appeared to be popular due to the cost and complexity. In fact it is quite straight forward to tap into the fuel injectors. Just needs two wires.
Most people there don't realise the merit of a constant pressure, PWM valve technology. Far better than a pump speed based.
There are exceptions such as this guy:
http://www.corvetteforum.com/forums/...t-came-in.html