Yes, with a Pi2 B (don't know if the older Pi's will work with it or not), ran 5 sticks for a week, plugged into a USB 2.0 hub that was plugged to the Pi. Then again for a week with 5 sticks plugged straight to the Pi, with no problems.
Ok so not directly plugged but using the know workaround (which doesn't always work), but good to know.
Thank you Jake.
Now I just have to find one that ships to Europe and hope it'll handle 6 sticks :p
Or I just get another Orico A3H10 and use 3 sticks on each.