i think that they are taking a step in the right direction, considering that...
1. JR makes street legal kits
2. Rotrex has been in the industry and is proven
3. Roots blowers are not that great anyhow, hahah, jk... but you know if you were running 10 lbs rotrex vs 10 lbs roots, the rotrex is probably better for daily. any more boost than that, you'd have to get a bigger supercharger which in turn takes up more space... and according to JR, the rotrex is good for 20 lbs?!?
4. JR has a great reputation to with-hold, so they won't skimp out on any research before releasing to public.