I have stumbled onto a slightly more elegant temporary wave solution than the tried-and-true ziptie wave fro Spydercos.
For years, the Kwik Thumb company has made brass attachments that secure to knives with only thumbnail grooves, such as a the Buck 110. They make both thumbstuds and bars that install onto the spine of the knife and tighten down with set screws to create a fully removable opening device.
I got a brass Kwik Thumb Stud and installed it inside the Spyderhole of my Caly3 as shown below:

I am happy to report that the stud works adequately as a wave device. It is not quite as grabby as a chunky square ziptie head, but it is definitely easy to catch on the edge of your pocket.
I am considering trying to grind some of the extra material off of the stud with a dremel. I would take off the knurled section inside the thumbhole, flatten the forward face of the stud and round the edges on the top of the thumbstud.