[dtremain]

That fee is per tuner, not per receiver, right? So it would be $10/month for the dual tuner plus the $5.99/month.

No. It's five dollars per receiver. It will only be $4.99 for the receiver, just as it was for the one you are replacing. Plus, the $5.99 for the DVR service (regardless of the number of DVRs).

I don't have the technical savvy to answer your multiswitch question. I've paid for all my installs and just happily watch tv.