I did, ya. I wasn’t having issues either really, until I installed a temp gauge and saw how warm it ran. The Derale cooled 30 degrees more than the B&M did.
Let me drag you over to the discussion on this on this thread. Mishimoto MMOC-F Transmission Cooler
The guys that responded there are definitely not in favor of a fan cooler. I have evoked your moniker there.