I left mine on because it's hard to tell how close that curb or parking lot stop are and that front air dam is LOW. Have already saved a scrape or two or three.
Haven't made an extended trip in the JL, but took our JK from Houston to Vegas with one dog on the way there and two dogs on the way back. (we picked up a Weimaraner while we were there) Made our way back by way of the Grand Canyon and other parts of Arizona. I think the Wrangler Unlimiteds...