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The spring action of your clip works very well. Your clip is definitely still the heavy duty king of clips. My version will hold notes to the side of my printer, and is pretty cute. Their useful functions don't overlap much.
I left the operating mechanism the same, making all the changes to the lower half. This is my first remix, and as I explained privately, was a bit unintentional. Getting it to print standing up was actually what I set out to do as a private test, but it came out pretty nice so I decided to share.
I put a little knockout tab (visible in the STL) to hold the two halves together, but it did not print. Maybe too thin or not properly tacked to the sidewall..