First off, I broke it out for dual extrusion using mesh mixer. The lips could be more efficient but it works very well. I also combined the holder into the tube, and created a stem for the plant so you don't need a pencil. Tolerances are tight for the stem so if you have any elephants foot you'll need to trim it. No glue needed on my prusa.
Some support just at the base would be nice but I didn't use any. Some sagging at the very bottom but everything else came out stellar