I ran TV Fool for Fairport Harbor and it predicted that you should be able to get a few channels with an indoor antenna (those highlighted in green)... try it for your specific address:
http://www.tvfool.com/?option=com_wr...0b8604ad48d044
My guess is that it mostly hype in the antenna ad, and it likely will not perform better than a simple rabbit ear antenna. Don't expect too much! Anyway, it should be an interesting experiment!
The sub-channels of the ATSC transmission are all part of the same digital stream... if you can receive the main channel, you should get the sub-channels as well.
just my 2 cents worth,
jr