radio 'test' buttons

Hi guys

I'm about to complete the first of my Opencockpits/Hispapanels NAV and COMM radios and was wondering if it's worth using inputs for these buttons. Apart from the transfer switch I think the default FS9 radios only have an ID button which just activates the audio for that frequency, but no test button. I'll be using Radar Contact and flying online (when I can pluck up the courage to move my aircraft instead of just listening in at the gate :D )

Have any of you Boeing builders connected up the 'test' buttons on your hardware radios, and how do you use them?

Thanks in advance

Kris
UK