Large Port Commando on a 340

Is anyone running large port commando (P5153850) or w2/w5 head on a 340 on the street? I am interested in hearing how they perform with a smaller engine and how drivability is (any loss of torque from port air speed at lower rpm?).
LP Comandos are available for about the same price as RPMs and considering them if they don't detract from street manners. (I know of good priced set of w2 rockers so that cost would be a wash between the two)