I will 2nd this! I too, did the vice press for awhile. This is a great tool to have for assembly and disassembly. There is a built in notch also, so you don't ruin your clips on disassembly. Just wish I could figure a way to disassemble a click pen with the plastic mechanism.
I have disassembled a click pen like this.
Unscrew the button at the end of the finial.
That allows the spring for the mechanism to fall out, and also the more flexible parts of the click assembly.
Use a rod which is a tight fit into the other end and tap gently onto the harder and more robust plastic click mechanism which is attached to the clip assembly. That knocks out the finial clip assembly.
I tried this method after suggestions from Mal and Curly in October 2020 and there is a thread about it on the forum.
Hope that helps-no guarantee but it worked on my pen, but there are different manufacturers as Mal said at the time.
Best of luck,
Mike