I was happy with my tray that I use for in-progress pens, then I saw yours, now I'm not so happy with mine... nice pens, lots of people dump on the slimline, but I really like a nice slim.
Nice pens and display setup. I like the board for in-progress pens I have ten for Christmas presents- need to organize them in some way.
IMHO, Slimline pens can open the way for creative shaping of the blank. My first was in a class at Woodcraft. I turned purple heart with a slightly larger diameter in the middle. My wife claimed it for herself. I have seen some with a flare at the end where the pen is gripped.