To judge their tone, just listen to the many videos on YouTube or other platforms. There's simply no need to advertize this, they sound great, the very best among all the others after many comparisons.
I always use them in hum-cancelling mode, both pickups fully opened but they hum a little bit more than the stock pickups in my chinese-made bass. So, next time I change the strings I'll tape some copper foil in the cavities and link it to the main ground.
This has worked in my six-strings so that won't be an issue for long.