We use a technique that doesn't remove the testicle when we alter our bull calves. Emasculation vs. castration. Occasionally, we have to castrate in order to properly get the job done right. This is done during branding. So yeah, the testicles get "smoked" on a hot branding iron heater, and there's always someone around willing to eat em. I'm not one of them. I'm usually the one that removed em, and I just can't bring myself to eat em. I have tried them on other occasions and can't say I care for them. I guess it's more of the novelty of it all.
p.s. Just drove past Rock Creek myself last weekend on the way home from Seattle.