I have a SlingBox HD Pro and it works great over the lan. Good thing as that's what I mostly use it for. But only one at a time, can't stream channel to more than one pc. I have the VIP222k hooked to it. I have to use a different remote version as dual tuner receivers are not really indicated for use with this SlingBox. HD looks ok but sometimes you can notice stream compression changes, little hiccups at times. I have the required upload speed on my ISP to make it work over the net very well too.
I am using a Linksys E2000 router (gigabit) with 2 Linksys 8 port gigabit switches
time for a pic!!