Articulation?

I am wondering about the Calmini Rear Sway-Bar Quick Disconnects. I understand what they do and why they are used, but how come they don't have something for the front? Wouldn't you need articulation at both ends? Also, can you just disconnect your rear sway bar permanantly and not have much effect with body roll on the streets? And how easy is it to put the Calmini Quick Disconnects on?

I'll take this one. use search.
http://www.xterraownersclub.com/cgi-local/ultimatebb.cgi?ubb=get_topic;f=37;t=000539

http://www.xterraownersclub.com/cgi-local/ultimatebb.cgi?ubb=get_topic;f=37;t=000155