After receiving a lot of feedback on my capsules, I decided to redesign the son of exo tube.
The main complaint I was getting was you have to fold a bill to stash it inside the current design. So this was the biggest change. I have also reversed the threading so the male threads are on the capsule body instead of the cap. Although I think the older threads are cool, these make it easier to stash things. Here are a few pictures to compare:
I got my son of exo tube today and it's beautiful, I got one of the original designs (male threads on cap) blue anodized and I really really like it. I will defenitely get more sometime in the future. Thank you Esteban!