Thats an interesting distinction. I'll remember to have a student post our stuff next time I need to post company info

Based on the Cobra product line up, small voice activated Walkie talkie headset would be useful for MTB racing (to inform your team of any problems on course or if you have a serious mechanical/accident and need to send out another rider). Except every race I've ever been to bans wearing such devices.

On the road I don't see such a need. Its easy enough to communicate with the group and it'd be one extra distraction I don't want.