I say set it up like the Spy or Synergy with the head offset and the button next to it. Then you don’t have to change grip to push the button or use the rotary. All with HDS durability.
Not that I don’t think the other two are sufficiently durable.
If I remember correctly, it’s been a couple years since Rey was designing his first light, he designs them himself but does not have the equipment to make them. Now it is possible he has manual machines he can make things with, prototypes or one offs and the like, but just didn’t want to do...
An interesting note on spiders. If you bring a regular flashlight up by your temple and shine it around the yard you will see “glowing specs”, the light is reflecting off the spiders eyes. Interesting tidbit I thought I’d share real quick.