I have at least cast a cane rod that was made by using the BOBFS (Bamboo over Bamboo Ferrule System). It was a fast action 6-foot 3-weight built from matake bamboo by Dilvo Favretto. The female section is made by including a swell in the cane so there is sufficient wall thickness to prevent splitting.
A video was made showing the same rod in action, with the angler/builder landing a nice rainbow in fast water. I did the translation of the transcript. You can get the translation by doing the following. In the lower right hand corner there is a gear-shaped icon. Click on the icon, then where it says “legendas/cc” click on “desativado”. Then click on “Inglês (Estados Unidos”).
https://www.youtube.com/watch?v=WrG3NO3RCHwIf the link doesn't work you can copy and paste the url into your browser.
For the builder it is advantageous to use the same material throughout the rod, since quality nickel silver ferrules can get expensive. The bamboo ferrules can be engineered differently to provide various qualities.