Found some distortion caused by yelling at 85 -90 on the highway. Wife had to yell because of the wind noise in my helmet (and my bad hearing). Other than that, never noticed any distortion... always really clear. Now I find that at a stop when we take the helmets off, I'll be talking to her as if we were still connected. Other people have noticed me apparently talking to myself. No one, however, thought it all that strange.
Most times for short trips I set the mic for continuous 'on', so there's no delay when we talk. Handy in traffic. Funny to hear her engine noises. And she can hear my radio in the background. I have to contain my coughs, sneezes and belching out of respect now. Also my occasional extremely foul comments about cages.