Well, they showed up yesterday...50 50cm ones, 50 100cm ones. And the verdict is....
Hot damn, what a DEAL!
Yes, they're everything I was hoping for. True, they're only in black, but unless you're hellbent on having your modular look like a unicorn sneezed all over it, black is fine, IMHO. The cables are pretty much the same sort of thing as Nazcas et al...molded 3.5mm plugs, and a nicely-flexible cable stock that's easy to deal with when there's a bunch of them and you need to get past the tangle. Definitely NOT throwaway grade! So if you need piles of patchcables, I think this might be the mother lode!