no, not in my experience, it is greyed out in sonar and you must st it via your driver/app for your audio interface. and anytime i change it via the audio interface driver/app while sonar is running the audio engine spits the dummy and stops, where as studio one will keep on truckin whichever way you do it, via studio ones options or via interface driver/app
just tried it again to be sure, and to be sure it is
and yes asio