I flew for a couple of hours never noticing vox was out until someone mentioned it. Then I got aware of how comfortable it actually was to fly with no vox chatter constantly messing with my other game sounds. I really fly much better when I can listen to my engine, wind, flaps and surrounding planes engines and gunnery. It really makes the SA part alot easier I think.
And it is also good practice for SA, since you have to look more carefully after enemies when you don't have vox inputs on what enemy plane is where and doing what..
Also I thought the overall gamesounds were alot better, more crisp in a way than before. And I did not have any of the sound delay that others complained about.