I tried mine out as an improvised awning for our R-Pod camper this weekend. It works as such, but I'm really looking forward to using it on the Jeep. We didn't experience serious precipitation, but I see no reason why it won't shed moisture just fine. It held up in some fairly stout winds, and that was when not used as designed. Guy lines are your friends. Pros include a variety of ways to set it up and adjust based on weather and overall roominess. Only real con so far is that the poles are pretty bulky and heavy, as well as non-adjustable in length. I think you will work to break them though. I would want two people to deploy if conditions are windy. Note that it can be set up sans vehicle in a sort of A-frame configuration. I suspect that you could also just detach from the vehicle and stake down that portion of the tarp while leaving the poles as originally set if you wanted to go somewhere, but leave camp set up. Overall, it seems like a lot of shelter for the money and one of the few that does not require a rack for use. Long term use will test durability, but it is pretty heavy nylon and seam sealed. Unless their stitching sucks, it should hold up.