Definitely interested! I have a few questions though for the 18650 version. How strongly is the clip attached to the body, and how easy would it be to get bent if pried out accidentally? I would be carrying this on the outside of my belt via the clip, and I'm sure it might get pried up eventually if and when I catch the light on something.
A friend of mine asked me to torture test a light he had just put out. I tied it to the bumper of my car and dragged it around 5 miles. Then tossed it into the air and hit it with an alluminum baseball bat a few times. Then set it on a golf tee and gave it a few whacks that way. Lastly I set it outdoors in a snow storm and left it until the snow melted. It was scratched up pretty good but otherwise fine.
I agree with the option of switching the clip to the opposite side of the side switch and don't mind the "E" on the clip. Maybe laser cut the "E" all the way through?
My 2 cents.
Multiple finish options
No knurling, but patterned (optional)
Removable clip with filler screws
18350 tube option, or split primary tube, so that extender removal makes it 18350 sized.
Access to high or low from off.
No onboard charging
No strobe, or make it well hidden so it can't be activated accidentally