I've read it.
I'm still partial to Byrne's MOS reboot from the 80's.
It was that mini that got me reading Superman in the first place.
There is alot of pre-COIE mythos being brought back with Secret Origin.
Now I know how Superman fans must have felt in the 80's with the reboot. And no..... I'm not even considering Birthright at all, in my mind it's considered an elseworlds story.
Has anything been changed from Birthright by Secret Origin, or does SO fit into/add to what BR gave us?