Vase-X1

I printed this today. It got knocked off the bed about 3 minutes before it finished. So, I created the inverted version which I will try next.
For some unknown reason Simplify 3D prints it with some slits. I can't figure it out. However, the slits are interesting.

Let me know what kind of results you get.

Added X3 version (upside-down) with thicker wall; no open slits.

Definitely print it upside-down!
The photo shows X3 and X1. X1 will have slots. X3 is thicker.
The X1 in th