Well it's definitely possible, I just dunno what brand they used ... maybe you can PM them on youtube and ask:
The pushbar in this video is a Setina PB450L.
I have decided to add one to my 08 Hybrid Yukon and called Setina Tech Support last week. They said it would fit the same as a regular Tahoe or Yukon. They also sent me the install instructions (as a PDF). Looks like you have to remove the tow hooks and install the bar bracket instead. The bracket uses the same screws and screw holes from the tow hooks. The push bar is then attached to the bracket.
It all looks really simple however I have not checked the tow hooks on my Yukon yet. Currently I have the grill off, have plastidipped it matte black and have new projector headlights that I am hoping to install in the next few days.
Personally I like the Setina because it looks heavy duty. if you do decide to get one, shop it on ebay since I have seen them much cheaper through third party dealers. The 450L is the Aluminum version so will be much lighter than the steel ones (model 300).
Hope this helps.
Kal.