Looking for Wineberry (Rubus phoenicolasius)

Hello, I'm looking for some wineberry crowns for my food forest. For trade: I have a really young system and won't start pumping out propogated plants for a year or so, but I do have access to some interesting american black elderberry plants from specimens found taking a vining form on pine trees. They'd make a good living trellis/building/fence plant.