If you can drive your truck without tow mirrors, you shouldn't need them with a FWC. Tow mirrors are for towing trailers. With a FWC the footprint of your truck has not changed at all. That being said, the upper limit of the camper is where trouble can happen. I rubbed our Fiama awning against a pillar in a parking garage backing into a tight spot. The ground was sloped down so the truck was leaning enough where the top of the camper was about 6 inches different from the tires. I was focusing on the the bed of the truck in relation to the pillar and didn't realize the awning was so much closer. Thankfully it was a stucco pillar so all it did was rub some of the paint off of the awning housing. But it was a lesson that while the lower limit of the camper is the same as the truck, if you are used to backing the truck up normally, you might not be thinking about what is going on up in the air. But tow mirrors don't help with that. Taking your time and possibly stopping to pan your mirrors up and down a little bit is what does help.