Print in the orientation provided with support, this is the best angle to get the clip to print accurately, I tried with it on it's side and it didn't fit but in the standing orientation the fit is perfect! I recommend printing with brim but have included a flat bottomed version as well.
Watch a video here
https://youtube.com/shorts/tLkBOedUTfY?feature=share
The author marked this model as their own original creation.