I got my lowers from Eddie on Thursday with the top fork mount option and have them both installed high up and just below the bottom of the Alley Cat.
They do make a big difference in reducing turbulence that results from airflow that would otherwise circulate from the forks up over the gas tank and into your upper body and face. At slab speeds there is now just a very minimal flow of air around the upper body and head. I dont smoke but if I did I think I could put a pack in a front pocket with a zippo and light and smoke a cig with no problems while doing highway speed. (I am not recommending this)
I really think the lowers are needed for those of us who utilize the shields