It's at times of emergency maneuvering, that you want all of the handling available to you. So I'd suggest using the sway bar.
Your Camping World could have competent staff that knew what they were doing. Or, they could also have bodies wearing the Camping World sign tags - you just never know.
You might post on the TT forum, a request for recommendations of shops in your area with good reputations for setting up a trailer and tow vehicle.
Again, one of those things where every bit of safety you can add, well, why not
Best to you, hope the Eco Boost takes good care of you!