GreenHopper
20 going on 60
But their SS cases are so nice! Much more than any 3rd party case I've seen. And I found a lot of them!
As leather sleeve you can take what you want, all are looking pretty similar.
I don't think they look all that to be honest, I have cigar cases that look just as good.
Functionally I've found I prefer a soft lanyard based case that I can just use when out and about. Having had a Hopper slip out my pocket never to be seen again I feel a lanyard offers better security and easier access.
If I'm on a longer trip I'll use a glasses case sized ecig case which can fit the Hopper, spare batts, funnel, cleaning tools/liquids and charger.
I actually see no real use for the SS case, if I'm out with a coat/jacket then a soft case can be put in a pocket, if I don't have a coat/jacket then I don't want to have to shove that thing in my pants pocket. That's when the lanyard option comes in handy.