@foosa, well talking on cell phone can distract, its just for safety.
It is voice activated, when a phone call comes in FM radio suspends, you can say a word to pick up the call or remain silent for 7 seconds to reject it. Works for speeds up to 120 kmph if you are using a full face helmet.
I charged it once and listened to FM for a couple of hours, I will let you know the end result. Price was $100+ and $20 for shipping had to pay Rs.140/- for duty.
For HIDs you know much more than me, but having fiddled with electronics, I advise, running heavier wires from the battery to the lights and use the wire coming from the switch to trigger a relay which uses the heavy wire to power the lamp. I can make a diagram if you need one. As for the holder you can assess your bike's holder by lighting a similar load in a safe place out of the bike.