It'll be interesting to see the tensiometer results for sure. And you'll likely be the very first person to ever lace up an all radial rear because of this test.

As a short term proof of concept I really suggest the hub and strings deal of the post just before the last one. A big part of this discussion is the belief or lack of about how the angle of the spoke to the load leads to changes in the tension. You mention it's not a fair test without a rim but for this " single spoke" proof of concept your hand IS the rim. But a rim that's easily moved to alter the angle of the spoke to the hub Setting up this test with a bare hub, a bicycle frame to hold it in place, some string and a handy 2 or 3 lb weight won't take long and it'll quickly show what this whole last dozen or so posts is all about one way or the other. From there it's time to lace and get some real world numbers.

Speaking of tension from your commment about a model showing why a spoke is always in tension it suggests that I may have written something to suggest such a thing. I can't see anything I wrote that could be interpreted that way and apoligise if my wording may have suggested such a thing. Of course spokes are always in tension and they are always supporting their loads directly along the line of the spoke like any good piece of flexible wire will do. All I did with the vectors at angles to the spokes is try to show how representations of the forces can be brokend down into components and directions for study purposes only to show how the angles affect the final and only truly existing forces in the spoke.