Anything I can't run in my home is a bit of an issue for me. I think it's great that they're doing stuff to support game stores, but it does cut some people out. There are game stores semi-near me, but not near enough. The one store that's reasonably close, for some reason doesn't want any organized play D&D going on at their store. The other stores are far enough away that it's just not really worth it to me, personally. (I don't have a car, and I live sort of way out on the edge of my metro area, so spending four hours round trip riding/waiting for the bus/train to play an hour or two of D&D is . . . not really very attractive.)
If I could run D&D Encounters at home, I'd be all over it, and I know a lot of people who would come play, too.
Edit: If I did want to get into running Encounters (or playing, for that matter), how big of an issue is the fact that it's already been going for awhile? Am I pretty much out of luck since I didn't start at the beginning of the "season", or what? I'm not really sure exactly how it works for people trying to come in mid-season.