You won't on hive. Still will on all other enemies though. On hive its been proven multiple times that the white damage given for the "extra damage" overrides the previous crit, therefore making it seem like you missed a crit. Again though, you will only not get clip back on hive. Atheon, tanks, sepiks, archon priest are all people you can fire at until they drop if you are good enough.

Ok that makes sense. I just unlocked it and saw it was working on the fallen however there were several times I didn't get it from Omnigul when I thought I should