pawpaw I intend to race on them too, but went for the 38mm as they are lighter less and pretentious for an E grader :-)
Currently racing on my training wheelset which includes a 630gm PowerTap Elite+ hub, great for information, but my current rear wheel weighs more than the new wheelset.
Still those wheels are not hard to push around a flat course even attached to a steel training bike. But in a couple of weeks time I have a race, that requires me to climb a lot more than I am use to or like, so the lighter the better.
Been dealing with Johnson via
sales3@farsports.cn all very easy, email replies have been pretty quick. Only odd bit was the email address for the paypal account was @gmail address, but a quick look at the RBR thread put my mind at rest.
Back to racing, a dutch friend raced a couple of crits in Melbourne in January commented he was the only one racing on "normal" wheels, everybody else was racing on carbon.
Interest in which frames your friend got from FarSports, looking for a stiff BB30 frame for a crit bike later this year. The RBR threads on frames are not that informative as the wheels thread and generally cover Hong fu and Deng Fu