There is nothing exclusive of using a HDMI
you can have it all.
You are still able to switch right back to your old configuration
I believe you merely need to step through your
Unless Dish us incredibly behind the curve
they used a HDMI
to bring their signal to your set...
and add ($$$) a LOCAL "OPTION"
their feed... but if you ALREADY
had an antenna
hooked up... you should be able to switch right back to that source... or a VIDEO PLAYER obviously IF you have one)
and/or a SECURITY screen
(if you have a compatible camera or server)
Carnac the Magnificent