Sorry all, I think I was not clear enough. When we camp, we take the truck camper off at the final destination where we stay for days. All we have done is local trips where we get to camp the same day so the camper comes off so we can use the truck for local stuff.
This time around our final destination is 6 day drive away and at the final destination we are taking the camper off since we will be there for 6 weeks.
However, the trip there is 6 nights at different places each night - so I am not planning on taking the camper off. Since I have no experience camping with the camper ON the truck, the question is - can I open the slide while camper is on the truck with all the torklifts connecting the camper to my truck.