+1 on the connex or any speed link!
I now have Camp 12 on a bike. I attempted to install the chain (how hard can it be?) with a chain tool supposed to be able to handle Campy 12 and peen stuff. Whatever. I completely screwed it up. I was already NOT a fan of Campy's chain connecting "system". I also was not about to run out and either buy a Campy brand chain tool (expensive) or another connector pin rig.
So I grabbed a Sram Eagle Powerlock (this was a year ago before other stuff was available). I was a bit worried about small width differences. I put it on anyhow. From what I can tell (sound and shifting performance), everything works perfectly. And it's the pretty rainbow color. Lol. I had the bike in a shop while I was looking at other stuff. I caught a few of the shop guys "admiring" my wrenching skills...specifically my non-Campy chain joinery.
I'm sure this is somewhat cringe-worthy.