The two infamous starting SP's. Honor and piety are very infamous for being terrible starter SP's because in order for them to work correctly you have to already be well established but they can still be selected from the start of the game.
Has anyone ever had a successful game where they don't start with tradition or liberty but go with piety and honor first? I have tried it but i was behind everyone and never recovered until i reached the medieval era and everyone else was an era ahead of me or just getting out of medieval Even though i recovered i quit because there was no way i could win the game in the position i was in.
So has anyone ever had a good game starting with the SP's?
Full Piety first can work well with Poland. But you wouldn't want a pantheon that only provided faith (by contrast the ones with culture & faith are good). A major food pantheon would also work if you can also build the Oracle. And going this route, you want to complete full Tradition as your second tree and do so in time to avoid slowing down Rationalism by more than the cost of polices.
If you're not playing Poland though, Piety appears to be a handicap big enough to make it needed to play one difficulty level lower than normal to still win.
Full honor first is best on a Duel size map playing your choice of Zulus, Aztecs, Huns, Assyrians, or Mongols.
Picking honor opener before first tree completed without advancing: That's mostly used when doing achievement hunting that requires knowing about barb camps.
Picking piety opener before first tree completed without advancing: I can't think of a reason to ever do this. Shrines are cheap enough without needing to be half priced and if only after the world wonder that can wait until you finished the tree you were intending to completing first.