Using harmony remote with x1 dvr

I plan to request a voice activated remote (XR15). However, I have a very old (10+ years) set top box (DVR). I am also using the Harmony 650 remote – which is IR.

If I get the upgraded box (X1) will I be able to use the voice remote (RF) AND the Harmony (IR) at the same time – without re-programing. In other words use the voice capability or the Harmony features as I wish.

How can I do this?