GXM-30 for nav traffic and XM Radio

Has anyone heard or have experience with this Antenna? I am wondering if I can simply plug this Antenna into my Kenwood DDX6019 with the KNA-G510 nav by garmin and be able to get rid of my aftermarket XM tuner I have intalled. I would like to be able to use the XM through the Head Unit (kenwood DDX 6019) I'm hoping I would be able to transfer my subsciption from my tuner to the head unit.

Have you found an answer to your question?  I've got the exact same setup as you.  I'm looking to add XM but I really don't want to spend $250 on an antenna.