I just picked up an 05 VFR that has a zero gravity screen on it. I an 6'2, 175lbs. I've only put 1,000 miles on her so far, but I have not noticed any buffeting at all. I can tuck just a little and feel absolutely nothing. However, I prefer to ride with a normal riding stance. I have noticed some helmets make a difference too. I have a lower model shoei that I like.
I have ridden a 2000 Honda shadow for 10 years with no windscreen and thoroughly enjoyed the clean air. On the other spectrum, I had a Suzuki V Strom that nearly made me brain dead from the buffeting.
I hope someone has some experience with the Givi for you, but I enjoy the zero gravity.
