All the discussion in the world is great, but I have had boiled then grilled ribs. I've eaten ribs cooked at 350 F. I've eaten them slow cooked at 225 F. The boiled ribs are not as good as ribs that have not been boiled. Compared to BBQ ribs, there is no comparison. So, waste a slab of ribs if you must, but you will come to the same conclusion as many others that it isn't worth. Does that mean that they will taste bad? No, not at all. They are PORK, after all. But, if you boil them or simmer them or what ever you want to call it, it's not the same and not as good, IMO, as ribs that are cooked over a fire without being boiled.
Operation BBQ Relief Founding Member - I am Obsessive Compulsive about BBQ. Google it.