The Acerbis have to be trimmed ( marked in pink ) to miss the brake master cylinder( I used a hot special soldering iron ).
The OE ones, although not as pretty offer far more wind protection than the Acerbis.
I put Rally Pros with the metal bar on mine and the handlebar fixing is of the rawl-bolt type so the likelihood of pinching the wires inside the bar is pretty high. Some people have modified, (shortened?) the bolt to stop it fouling.
I don't like heated grips so it wasn't a problem for me. I just cut them off.
You could fit Oxfords or some such that use external wiring.
If you add the optional deflectors, they keep most of the wind off your hands.
Found out that touratech had a modified version in my copy of their 2008 catalogue which is compatable with the heated grip wiring, set went on eBay today for €81
And just for reference should anyone be searching and find this thread, here are the instructions for fitting the Touratceh version which is adapted for the heated grips. Pics show the way this version is modified which might inspire someone to modify another version themselves. http://www.touratech-usa.com/media/fromoldsite/instl/instl_040-054x.html