Yes, I have. I had two cases from them for the 15PM, the black one and the shocking orange one.
While their quality is top notch the two 15PM cases did not thrill me that much. The black TPU sides were way too soft and I ended up selling the cases off without even using them. Looks like they made some decent changes to the 16 pro cases and I'm a sucker for that bright orange. I'll post some pics and thoughts once I receive the case.
Also, keep in mind that these cases ship from Germany and take quite awhile to arrive.
Here's a pic of the shocking orange on my 15PM:
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Nice! Keep us posted on what you think. The orange looks awesome.