Do you plan on riding in winter? My mack hubs aren't well sealed and frankly I think the machining is better on mass produced hubs I've had, even if the finish is not as pleasing.
I’m struggle to see why that seems so hard to source
Hand built wheels are a minority interest as far as the industry is concerned, fixed is a small niche, track riders using traditional wheels have largely favoured large flange, so that's what became popular in the early 21st century fixie boom.
Do you plan on riding in winter? My mack hubs aren't well sealed and frankly I think the machining is better on mass produced hubs I've had, even if the finish is not as pleasing.
There's no denying they look good though.