It is setup for hi/low. There are two emitters, one on top and bottom. Low is just the top emitter, and high is both.
At night, it's whiter and brighter than stock, but the cutoff is soft. I didn't get flashed at all, though we're talking neighborhood driving. The spill over the cutoff isn't overly bright, but I would like to raise the beam slightly which I'm not yet comfortable doing at least until I know what it's like when oncoming.
I noticed the heat sink gets warm while I was taking the pictures. But I had no trouble handling with bare hands after the light had been on for 5-10 minutes. If this thing was a real cooker I'm sure it would have heated up in that time.
Link to eBay seller: