It has often been said that the tick happens to engines that idle a lot. So maybe there is some truth to it. However I don't know of anyone who were brave enough to try. Opening up the truck to speeds where it the engine hits the limiter, would be rather dangerous. Not sure if we can rev the engine that hard while the truck is stationary as well. When I first got my license and got my Alfa Romeo I enjoyed the sound of the engine. I used to rev it occasionally to around 5000 rpm. Then someone told me that such moves would damage the engine and more importantly the rest of the drive line. Since then I avoided doing it.
It is clear that the Hemi tick is something that everyone wants to avoid. I have experienced the tick in its worst form. Not pretty and quite expensive. So far, based on the advice here, the most tried and true method is making sure that the engine is lubricated well. Using Red Line 5W30 for me worked well.
When I purchased my current truck (used), my mechanic said that there was a lifter tick noise. Looking through the service history, I noticed that the oils used where decent, but not great. One oil change with Red Line 5W30 and the ticking vanished. Now every oil change I use Red Line 5W30. On the hottest months of the year, I use 5W40 just once.
The other known culprit of the ticking are the manifold bolts. Apparent the manifold warp for the heat. Considering the heat we experience here in Dubai, I'm surprised I haven't experienced this yet. However this of course is not the dreaded one and is easily fixed.