I have A23 rimmed wheels. They do have machined sidewalls and are sleeved. But the joints on both of mine are just as smooth as a set of welded Mavics that I have and do not cause any noticeable brake pulse.

Fwiw I use my A23s on a modern looking aluminum bike. But I do have a retro looking Waterford (panel paint scheme) that I use Velocity Razor rims on and it looks great.