I considered putting a Kick in my mechanical Silver Bullet. However, I change flavors a few times a day. Each flavor has its own "sweet spot" (in voltage) that best presents its fullest flavor. Changing the wattage (voltage) on a Kick requires adjusting a screw on the Kick with a cross-thread screwdriver, meaning the mechanical mod must be disassembled each time you make an adjustment. PITA (pain in the azz).
With a regulated mod you need only push a button to change voltage/wattage. Convenience. In addition, a regulated mod has a built-in voltage meter and built-in ohm meter. Convenience.
In my opinion, if you are going to Kick a mechanical mod, why not just use a regulated mod in the first place?
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You might look at a "Crown". It is either watts or voltage and is adjusted w/o dis-assembly.