Still a beginner wingdinger, but experienced kitefoiler.
If the wind is above 20 knots then I can wing up on the foil. I've made a few surface gybes, and some pretty decent attempts at foiling gybes. It's easy with enough wind.
The problem I, and many people, have is that if there's not enough wind then winging doesn't work at all. Even the best of our local crew need close to 20 knots to do anything useful. I read about 10-15 knot winging, but I have never seen it in the flesh. I've watched a few videos and I am keen to work on light wind slogging and pumping. There is always this appeal of "I wanna get out and try this ....".
I suspect there is a technique issue there in terms of properly pumping the foil, not so much the wing or wing power. I've explored that in my foiling wing sessions but it's hard to get a long enough session in to really nail stuff. The wind drops out or the energy levels run out. I would have thought our better wingers would have that sorted but that doesn't seem to be the case.
I've heard people raving about carving the wind swells. I've seen them and chased them on my kite foil. I've had to slow down to almost stationary to stay with them. The wiggling I saw wasn't close to carving wind swells. There are a couple of locations where we do get excellent wind swells but you need at least 30 knots to get any decent size and shape. I have a cunning plan on how to get off the beach and wing into those swells.

So far, if the wind is even slightly unsuitable for winging then I've gone for kitefoiling every time. I have access to good beaches and all the right gear. Kite foiling in 10-40 knots is easy and fun.
I live in walking distance of a beach that could be ok for winging, but is too small for kiting. I have a shorter, lighter board on order and I am exploring the possibilities of walking down for a wing. That could be good.