Perception is Reality!

Or as they like to say on TB, YMMV.

I dunno about nuts, (thanks), but my impression of the cobalts was immediate and couldn’t be any less subjective.
The tactile part was off putting, (maybe I got hold of a bad set?), but they felt loosely wrapped and rough. Hence my thinking they were poorly made. And sounded like the worst aspects of a roundwound string to my ears, too. (Brazenly bright -I can’t stand Rotosound swing bass strings,either, but that’s more because of the rough feel than the sound.)
I’ve used DR Sunbeams for decades, recently switched to their Pure Blues sets. While they definitely have a roundwound feel to the windings, they are one of the smoothest feeling strings I’ve played.