Cheerio Cycling England then

Perhaps. i remember when BC introduce Go-ride in competition with national Standard level 1 training. LAs bought go-ride in some instances and pissed off some NS / bikeabilityn organisations especially because NS level 1 was clearly preparation for the road (so one handed riding was taught as a means to signal to road users. In go-ride one handed riding was in order to lift a water bottle from a cage. It wasn't intened to promote commuting and was deemed a BC talent spotting excersise )

Firstly, it's not in competition from BC's POV. And secondly it teaches a range of skills required to ride a bike in many environments, with a view (but not exclusively) to competition. I often work with Sustrans Bike-It officers who have reached the limit of what they can do when Schools decide to take the kid's riding further.

One handed riding is just a part of balance and co-ordination as a technique, ever seen a TDF rider take a bottle? or a club rider pointing out potholes to his buddies?

Go-Ride is especially useful for primary children who, lets face it, are going to be doing their riding on non-technical off-road terrain and not mixing it with HGVs down the Uxbridge road. It's cycle coaching, not instruction.