Never have. One of the things we love about truck camping is we always have everything with us all the time. When we go out site seeing for the day we have all of our food, medicine, change of clothes, hiking boots, etc with us. This means we don't have to plan out the day. When we get groceries we don't have to run back to camp to put them up.
Now one thing that does make keeping the camper on the truck easier is we have a small 8' truck camper on a SRW truck. This means we are under our payload and it fits in a standard parking space.
