Love it! Actually, with all of the auxiliary LED options and lights everywhere they can be stuck on a car, I'm kind of surprised the "old skool" concept hasn't made a small comeback. I would love to see old halogen roof mounted beacons supplemented by modern lights everywhere else on the car. Another recent thread showed a Canadian RCMP patrol car with a Beacon Ray. Sweet!
LED's are great as they draw far less energy than incandescent or halogen lamps and they do well as steady burn, alternating flasher, or, to a certain extent, strobes. But it's hard to beat the sweeping action of a revolving beam of light, be it a sealed beam lamp or a reflector and halogen bulb. Yeah, I do like the old school beacons and light bars.