Well I've got bad news and good news. First the bad news. The snow pusher I was considering has been sold and there aren't any more locally. Now the good news. My son in law bought it and it is at his yard, just down the street from me. So I can try it out to see if it is something that would work for me.
As amhicks21 pointed out, the rubber edge does not do well in hard pack or icing conditions. We recently had about 4 inches of heavy, wet, snow that fell on unfrozen ground. So plowing was out of the question, unless you wanted to plow your gravel with the snow. Then over the last 2 days everything froze solid and the slop that was left has turned into frozen snow / ice. After 5 minutes of plowing the rubber scraper was chewed up and bent. My SIL thought it was a steel edge and was concerned that he already damaged it, lol. I did notice that the skid shoes were very narrow and probably wouldn't work very well on soft ground. He also said there was no way he could turn with snow in the pusher plus it was hard to keep it in a straight line. I suspect it will take more than 5 minutes of use to get used to it and figure out how to best use it.