I've never tried it or seen it personally, but my friend has been working with a clone of UBC Chemo and some different crosses. I'm about to start a test run of these 2, keep an eye out for the logs...

Sensi Mr. Nice [G13xhashplant] x UBC Chemo

Kootenay Mountain Nepalese Grizzly [Dutch Treat X Nepali] X Chemo] x UBC Chemo