I think the only drawback to x-over on the street is that you will not have a factory swaybar. I drive without a swaybar and x-over on a weekly basis and i have had no problems at all.
!Pics?My sway bar still worked with crossover, .
My current springs are stiff enough that I don't notice much sway. If you have very soft springs, taking off the sway bar will cause much more sway. My turning radius seems tighter with the crossover also.