Just to reinforce the views of Nick's high time military pilots on the subject, and to quote a type that Lu has mentioned - I flew the ST version of the 214 for 17 years in various parts of the world, mainly in the North Sea. The arrangements for bonding of the main rotor blades - or rather the lack of them - were the same for the 214 and the 214ST. I suppose that 30 percent of my time on the type was at night and I would guess that on no more than 10 occasions in that 17 years did I see a corona of static on the blades. Usually it was on the ground during taxying. The thought that all the time we flew around all lit up is amusing. If the military used a 214ST, the opposition wouldn't need to see lit up blades to track it - with the noise we made, once they started to hear the blades they had time to **** , shower and shave before taking aim.
On the icing side, those big fat noisy blades were the reason we had such a good icing clearance - you could really hang some amount of ice on the airframe, knowing that those blades kept relatively free of the stuff.