Really? I probably should have tried that... But... I didn't. Blast. I wasn't sure if the VC button would be mapped to the same function as the voice dial-esque button on the headset. I wish I was at home to try it. I may have jumped the gun but I figured that the two would be completely separate.
Stupid me. I'm definitely gonna try it when I get back home though and make sure that the function doesn't already exist.