I'm looking forward to the OTA guide implimentation on the upcoming SBC Dish HomeZone receiver. (IF it is ever released, of course.) I believe it will get its EPG info from an SBC feed via DSL, as opposed to (or in addition to) the satellite-provided Dish guide.
I would imagine it will be more accurate in regard to local channel information. I also do not think they will charge extra for it, other than the total HomeZone package pricing for DSL and Dish, if any. (It may not cost any more than the sum of DSL and Dish, and might even have a package discount.)