Hi,
I did mean about two parts spokes, not about rope soft one.
This is my current constructin.
It is easy available for hand make, and works well.
Although I begin to think, that not so often we need to dissasembly and assammble the wheel, to think about to save several minutes or not.
Meanwhile I have techology now, know how.
Riding test on video. Folding rim and one folding spoke are there installed: