OK, this is a touchy subject. lots of different oppinions. i asked a similar question a bit back about my hermi. after doing some research i found this. and it ONLY pertains to hermis that go hermi from fems due to stress like light/dark period tampering or light leaks, not natural hermis.
if a hermi pollenates itself the seeds will generally be female. its a proccess known as 'Selfing'. it will not work if you use male pollen, nor will it work on natural hermis. i cant remember the sight i found with this, but theres also a bit about it in jorge cervantes grow bible. im currently sprouting 2 seeds from my self pollinated hermi to confirm or deny this.
hope i helped.
Ery