Out of home streaming -- watching live TV without recording?

So it seems the only way to watch live TV with out of home streaming is to start recording the channel first. I don't want to do that, I just want to watch what's coming through on that tuner. I want to be able to channel surf if I so please. I also don't want to have to worry about stopping and deleting recordings when I am done. Basically, I want the functionality of the Slingbox, but through the Tivo app. I have a Slingbox, and it seems like an unnecessary middle man for some very basic functionality. Is what I want possible? Thanks