Jeff, I wouldn't, but that's just my take.
If foiling, try meat side up and very little or no liquid in the foil, tightly sealed with no air pockets to avoid steaming. Check often, especially if cooking HH. No water in the pan if bark is your thing.
If you don't want to foil, try using water in the pan, targeting 250* with fast come up in temp for better texture and steaming. I've been having great results with IBP spares like this with Chris Lilly's rib rub recipes that include decent amounts of brown sugar, but little or no chili powder. I start with boiling water in the pan so I get steam from the get-go, and for some reason or another, the bonus is that it's harder to oversmoke.
Although I rarely foil ribs, I've done it many times. It'll give the most consistent results, and is the only way to go if cooking in dry heat, in my experience, but even with a water smoker you'll get a slab of ribs that isn't marbled enough to stay moist til tenderness. Guess it helps to be observant and flexible, and the thing to know is that serious bbq competitors foil, whether using dry heat or a water smoker.