Nope, no direct experience. But lots of camping experience, both car and backpack, and this thing speaks to me. Its...beautiful.
Basically, you have a tent on a cart. It weighs about 800 pounds, costs about $7,000, and is light enough to be pulled behind most any vehicle. But mind you, it is an elaborate tent, not really a roll-along home." Room for you and two big dogs? Well, yes. But not much more.
So, you might think about how to create an adjunct to your SylvanSport. I will assume that, like most people, you have trained your dogs to perfection (kidding, of courseask me about the two Gear Beagles). But you might think about a separate shelter for the hounds. I know I would. Just a nice shelter from wind and rain. Something such as an REI Half Dome. Big enough for two big dogs, very sturdy, and only $170. You pitch it next to your SylvanSport, leash out the dogs, all is good. Alas, I concede the result could be: Dogs in the camper, you in the tent. Or you in the tent with one dog, spouse in the camper with other dog.
But so what? Its all good. With a rig like this you are essentially an outdoors person. You build a campfire, spend time in the fresh air, cook outdoors, and its all great. You need two things to make it great. One is an Outback Oven ($80), a gadget that makes it possible to make anything from brownies to frittatas to pizzas. The other is a good tarp. Get an MSR Zing ($350), a roomy, outdoor tarp/shelter that creates an open-air, sheltered space outside the camper/tent.