That is a work of art, and i am not just saying it.
I wish there were more designs like this not only for e-cigs, but for all aspects of everyday life. I L O V E it!
No one will ever convince me though that the end switch is comfortable to use. I do understand it makes the design much more straight forward.
I can tell by the way your mom vaped with it, its a very soft button to activate, which is great and minimizes the stress put on the fingers.
Regardless of my own opinion on the switch, if there was a poll for which one of the tubular mods is the best, i would vote #1 for your design, execution and aesthetics.
I do my own mods (based on already available parts), and never buy form others, (no need), but i might purchase a T1 from you just because i would like to see it sitting on my desk.
Thank you forcedfuel50 for the time you put into it, and i am sure your mom will enjoy it for many years to come.