I have removed mine as well to add the chrome moldings. Like Nifty said... I had the rear 1/4 window removed by a pro glass shop and then installed the chrome molding windows. You can get the chrome molding 1/4 windows on www.car-part.com
. The other moldings are very easy IMO.
The front moldings i did remove the outside mirror which involved removing the front door panels(or atleast peeling them back to remove the three bolts holding the mirrors. Then i rolled the windos down and pulled up with force....while wiggling the molding back and forth. I started at one end and worked my way down. I didnt break any of the clips.
The moldings on the back doors are easier....just roll the window down and pull up with force while wiggling one end.
The most important part of this mod is to buy the right moldings. take a look at your outside mirrors and make sure you get the same moldings that you have now. Some WK's have mirrors that the moldings stop at the bottom of the mirror and some have moldings thst go "under" the mirror to the front fender. Call Peter at justforjeeps.com and he can make sure you have the correct moldings. be sure to mention your from JG for the discount.