Just got back from a 3000 mile trip to Cody, WY, Devil's Tower, and the Black Hills. Most of the roads were pretty darn good, but we hit enough "surprises" in the road that I am convinced that using the slide locks is not an option.
I can only picture what the slides would be doing when the camper hammers and rocks over those bumps, if not for the slide locks holding them in place.
Other than that, it was a fantastic trip. Saw a lot of things we missed on our many past trips to all three areas.