yes, let me get a picture and post it.
I'm using stainless steel set screws so they don't stand out too much.
Edit: Added picture of set screw to the bottom.
I still have a few issues with the design, even though it is very nice!
1) As you mentioned yourself, it would be good with fins with the same diameter as the body and thinner in the same area so there would be about 5 of them.
2) The grooves should extend into the tailcap to make it easier to screw on and off and to prevent the laser from rolling on a flat surface.
If you fixed these issues I would be a happy buyer of at least 2 hosts!
I actually really liked the spiral cut too, but I guess it will not be part of newer designs since you have to mass produce these to make a profit.
Best of luck!