I'll admit to a fast skim of this thread, so perhaps this is already in a reply somewhere above.
I weight my suit and my rig separately. My weight harness offsets the positive buoyancy of my dry suit with just enough air in it to provide freedom of movement. The wing offsets the initial negative buoyancy of everything else. This makes a doff and don a whole lot easier. Since I tend to spend time in places where I can get tangled up in stuff, I want to be sure I am able to take off the rig (in mid-water if necessary but preferably against a hard top or bottom) without the rig trying to to one way while I "try" to go another.
With that in mind, I unclip the crotch strap, open the waist strap, shrug out of the harness while keeping hold of it, take off the necklace, unhook the dry suit hose, and get the rig at arm's length without much excitement. Putting it back on is easiest on a hard bottom with and over-the-head (Navy style) don, but I can also put it back on like a jacket, though that takes a minute or two longer. It always seems longer than it actually takes. I have never tried this with stages clipped on. I probably should, I suppose.
I have always been able to cut my way out of entanglement; but, if it ever happens that I can't, being able to take off the rig to get stuff off it seems a worthwhile capability to me.
This won't work nearly as well with a wet suit. You'd have to start by deciding what depth to be neutral without the rig. What the "right answer" might be would perhaps vary by dive plan. But a few pounds either way aren't horrible in my opinion, which is worth what you paid for it.