I did a survey like this almost a year ago too and it hit the required votes necessary for them to act on it. Haven't seen any products from the survey or from similar classes on this site. I think these items have razor thin margins for retailers hence the reticence to carry them here. The margins on the luxury ones, however, are a different story.
I used JetPens (great store!) for links and MSRP because the manufacturer's site is in Japanese.
I like my Saki cases because:
- Quite classy, even if not made of real leather
- Protects my instruments well (keeps delicate pencil tips safe and metal bodies from scratching)
- Slim, easy to fit in my bag
- Organized; roll up and you have an array of your pens and pencils ready
However you might dislike them because:
- Not as quick to open and close as a zipper case (have to fumble around with the strap, although not so bad once you're used to it)
- Strap can get in the way on the desk when open
- Doesn't hold a lot, only about 9-15 pen/cils per case
- Doesn't work well for things like block erasers or lead refills, although they work alright for smaller rulers (like the 15-16 cm rulers that are common; I have ones that fold and expand to full-size 30 cm) and of course pen-style erasers etc