The 0 Metolius and the 00 have the same KN rating. 5KN. I agree it's border line aid rating but with a dynamic rope and a competent ''hopping'' belayer, you should be fine taking a regular whipper (10-20ft).
I also have a Metolius Master cam 00 and I have taken several small falls on it.
Disclaimer, Relying on Internet Forums for one's safety is not smart.
So much rock, so little time