I wear the computer on my left wrist. I’m right-handed and if I wore it on the right it would get busted. I also hold my primary light in my right hand and it would interfere if the computer was there too.
I’m mostly DIR, but I don’t scooter and don’t liking passing the light cord under the long hose. When you have to temporarily switch hands with the light, the cord ends up wrapped around the long hose.
I started out with the light on the right and switched to left when I took Tech 1 and started diving with DIR divers.
So, I’ve done it both ways and prefer the light on the right and computer left. I have no issue working the wing while monitoring depth.
FWIW, I am NOT a fan of wrist mount computers. I lost my first one many years ago. I was working on a wreck, and when I started my ascent, it was gone. I must have hit it while I was working a crowbar. They’re nice during deco, but otherwise I’m fine with one on a hose tucked close. I also like to be able to analyze my air consumption post dive. I used to keep a spreadsheet.