Dual RF Input on HDTV Set?

I'm considering buying an HDTV set, but will be using it mostly on analog 
cable.  There are three OTA HDTV stations I can receive now using a 
converter box, but there will need to be an r-f switch capability
(hopefully 
in the HDTV set) to switch the ATSC/analog/QAM tuner in the TV set to use 
the correct r-f signal source (cable or local antenna).

Does anyone know of any HDTV sets with that capability built in?

TIA...