I've used the FEL to move snow, and it hasn't bothered my asphalt driveway. I now have a rear blade, and it doesn't seem to mar the driveway. If you have fairly new paving, replacing the rear blade with a piece of horse mat has worked for some.
Rear blades are very cheap. Mine was only $250. However, the FEL will work fine in light snow. You'll get tired of stopping, turning and dumping it in heavy snow.
My toothbar is attached by 2 holes in the side of the bucket. They are no good for attaching anything to the edge. Tried a piece of heater hose, slit and put over the edge of my Gravely snow plow when I had it and when my driveway was freshly done. Didn't work that well and tended to come off easily. Think I tried it on the back blade, too. No luck there either. Finally used both without anything, and they didn't mark the driveway. Didn't get much snow that season though.
Ralph