Skybox f5s and Sky HD on same LNB

Hi all,
Just a quick question. I currently have Sky HD installed and have bought a skybox to have a play with to see what it can and cannot do.
Will there be any issues having both plugged into one quad LNB i have the sky hd in the lounge but have 2 cables run into my conservatory and will install the skybox here.

I want to test the skybox to its full capability, if you know what i mean.

Thanks in advance.