I used Kanger Subtanks pretty heavy between 2015 to 2017 and then moved on to other attys. I pulled out a Subtank Mini recently when I got my SXK Moonraker E8 a few weeks back with a RBA. They still vape very well. And I forgot how very little they leak (virtually nothing). Bottom fill helps a lot here. As top fill tanks tends to leak when you fill them.
I bought those Fasttech top fill for the Subtank Mini and they do leak when top filling. So you are better off still bottom filling. I also forgot or didn't realize how short the 510 pin was on those Subtanks. They are like 3.8mm long and the standard is 4.6mm. Some mods they won't even make a connection.
I also pulled out my original XvoStick DNA60 and I never attempted to connect it up to EScribe until now. And it doesn't. Must have been like that since day one. Windows doesn't even see anything connected. Must be a bad data connection. Charging works. The older XvoStick versions, the bottom drops down and everything is mounted to the bottom plate. I don't know if that is still true or not.
dwcraig1's XvoStick connects to EScribe just fine.