Curious why you prefer a single chimney, I always like to look at my build/wick once I have chimney installed but am open to understanding pros and cons of both.
I used to be the same way. Wanting to put the barrel around my build vand fire the coil to make sure it didn't touch and create a short.
I got the Silverplay Nano, and the solid chimney wob me over.
I put screwed the chimney into NB the Bell cap and get it tight.
Then I was able to pull my build out without dumping the juice.
I was also able to bottom fill the Silverplay without using the fill port on the bottom of the Silverplay Nano.
Ibwould not have been able to do either with a two piece chimney.