If you are ever worried about hermies its pretty easy to spot one.
Instead of hairs coming out of the calyx there WILL BE small littel green bananas.
If you spot this you can just pluck them off CAREFULLY and hope you dont get any more.
I have recently had a NIRVANA PPP that threw out 5 green NANA's but has not done anything since i plucked them off time will tell.
J