longer/different size leather pouch? Well its a cinch to modify the length on your own, or even to create your *own* style and attach the leather pouch. It's crafty, original, easy, & more practical. The real issue is that darn pouch-thing ... for the life of me, I cannot find any of those that are longer than the ones u see the most often, which are almost always identical. I use a 1300mah Spinner w/Evods. So yeah, the Spinner is a little longer than the twist, not by much. The Evod is where you'll save room ... but even still, the pouches are not simply too long, they're not even close to being long enough to secure it well. There's also the inconvenience of the pouch expanding over time .. even possibly a mere week worth of wear, like mine. Even w/the longest lanyard, if that pouch isn't *snug* & stay that way, I think you're looking at quite a big risk. 
The whole reason I opted for the pouch instead of the metal clip was because I didnt think the clip looked secure enough to go through very much wear and tear. It *is* just a thin metal ring, possibly flimsy or not a guaranteed fit for every battery. Not all Egos are the same, which is a good reason for me to be reluctant. That being said, I haven't tried them. But because I dropped my poor little Spinner in the street when it fell out as I was crossing (run over by a semi, hows that for luck?) I have put the lanyard to rest. Like you, I need to find a solution.
