Hm, I don't have very good experiements with coinking, but okay, I will testing with my Rig now, and show the results tomorrow, from 24 hours now....
I m using coinking for a week now to mine X11 and X13 coins, so far payments and convertion to cloak is really good. You can also set email alerts when the mined coins are gone to the exchange and when cloak comes back.
Note that not all coins can be converted to Cloak, so i have some converted to DRK.