I can see what this would offer your son Andrew, but I'm not sure I see how this teaches a youngster to cycle, when it take the balance aspect out of the equation.
Ive been cycling for 25 years and ive no balance The main point i think is that he can experience the freedom of cycling and i also think it will do a lot to help teach the brain to balance :? without it you fall off but that would be the same with old...sorry RETRO stabilizers So its doing its job in helping him learn and the added bonus is its like big kids bikes.