So on your battery images with the kick, do you use the kick plus a vape safe mod fuse? Credo
The Kick and Stomp regulators do not need the VapeSafe at all. These are a bit taller than an Artisan Crown.
The Image with the red batteries and the white crown sitting on top (version 2.0 is actually blue) is for the Artisan Crown regulators...not the Evolv, Sigelei, or Smoktech ones.
The Artisan Crown regulators are magnetized so they stick to the battery, and they do come with a VapeSafe. In the case of the Crown kit, the VapeSafe also has an extra little magnet spacer soldered on and it mainly acts as a 'proper spacer' for mods that need it. I.E. The Crown with the included vape safe fuse and an 18490/18500 battery is pretty close to the exact same length as an 18650 battery. Without the Vape Safe spacer...the Artisan Crown would come up short. I.E. For telescoping mods, and some mods with big fat springs in them...the VapeSafe might be 'optional'.
An Artisan Crown looks like this (but version 2.0 would be blue instead of white):
Note, these others aren't 'magnetized' like the Crown.
Evolv Kick 2 looks like this:
And here's an Evolv Kick 1 sitting on a battery
Here's the SmokTech Kick Clone:
And here's a Sigelei Stomp:
So in summary...with the Artisan Crown, yes, I usually use the Vape Safe spacer that comes with it. While it's not really needed in my K100...I still use it because that K100 button is prone to dent in the bottom of my batteries if I'm not careful...the vapesafe isn't going to 'dent' like a battery negative post will if I get careless, screw it together a bit too tight, and then and mash the button too hard.
With my Evolv (or other) Kicks...no...I usually don't use a 2 cent fuse...it won't hurt if it 'fits' in your mod...but is totally unnecessary.