I would like to give the Goumi or Eleagnus multiflora a try here. I know it is growing on Vancouver Island and probably other places in BC. I did get several seeds about 3 years ago but only 1 germinated and I did not plant it in a protected place so it did not make it. Here is a link to a good short comment.

Send me a PM if you know where to get a couple.

Here is a link that might be useful: Goumi