It is basically an optimisation of the original design but is functionally the same.
This remix eliminates a rear wall to use less material and makes overhangs less pronounced to make the model easier to be printed.
I strongly recommend using brim to print it if you don’t want to see the heel fall.
You can find the suggested orientation used to print the object in the images.
With the proposed orientation the object should fit without scaling it, you will maybe just need to move it a little bit into position, but some user reported that scaling it down to 95% also works well.
I tested it with my X1C and is perfectly compatible.
About the P1P the original model was compatible with the P1P without enclosure and this remix have the same compatibility
Credits:
harrypulvirenti