I agree with this!! You cant even grab a 90 on the throttle side while keepin on the gas! And almost all racer bars are this way!
Thats how I have mine and love it!!! As for why the 45 on the throttle side? As stated above, your not going to be able to grab it any way when your on the throttle. They're basically just there to extend the bars and give you a bit of extra leverage.