Jethrow said..Hmmm, I'm interested in how it felt.
I've never held a wing but from my windsurfing background, seeing all these people foiling around without harness lines still boggles my mind!

first gen wings were sketchy in a harness. Really crap stability compared to a windsurf sail. Non-windsurfers were probably scared by the harness.
Now, some are close to a sail in stability, so a harness feels really nice. Naish S25, Echo, etc..
We're in a transition point where some wing dings behave better with a harness than without, causing mixed opinions in reviews.
You do need real windsurf harness lines, otherwise the lines slap you in the face when pumping hard.