I feel like it should hold up well if you’re using the magnetic mount option. You aren’t putting any stress trying to slide it into a holder. The proclip ones aren’t metal they are plastic but yes do attach exactly the same way.
I found this on thingiverse and printed it. I was able to take the magnetic mount from my old car and install it on the ball. Fits perfect and cost me about 50 cents to print (100% infill).