No, the Bi-Xenon is exactly what it says. It's a single H4 HID bulb with a movebale electric shutter that alters the beam pattern. You get HID intensity, albeit a different beam pattern, in high beam as well.
When you switch from low to high beam on the handlebar switch, the shutter (with a cut out in it) moves about 1/4" over the fixed bulb which gives you a high beam. Most folks will say that whilst the low beam Bi-Xenon is great, the high beam pattern isn't that good.
Either way, with a low beam HID pattern, there's very few occasions I flick to high beam with my HID set up.