I use a Lagun with two mounting locations, and when I find the time, I will be installing a third.
I still carry my
little aluminum folding camp table however, because sometimes it's just easier than shifting the Lagun - it's well worth its $25 price tag. And I also use it outdoors. It's very light, so if you are setting a BBQ on top of it, it's good to weigh it down with a couple of logs or rocks. For transport, it fits in the wet bath beside the toilet, and I use a small piece of velcro to hold it to the wall.
Pic of it being used for outdoor dining in conjunction with a magnetic sideboard I made for the outside of the van: