Read a review here that seems to suggest this may not work.
http://www.solidsignal.com/previews.asp?p=zhlsj
Has anyone actually tried this? I am about to try hooking up an HBU 22 to one side and then the other and see how my signals are impacted. Don't have the VHF Lo antenna out at this time since it is not needed at my present location. Will be relocating in the not too distant future where I intend to use a VHF Lo antenna.