Recently I just added a Slingbox and a Slingbox Pro to my gear.  The Slingbox Pro I hooked to our main DirecTiVo system and the Slingbox is currently hooked in a guest room  (while I play around with another DirecTiVo).

Thank goodness I had two Slingboxes hooked up or I would've missed NFL last weekend when I was out of town working and my wife was on our main TV.

What are your experiences of dual slinging?