1.In Pojo there was Discussion for more difficult situation like Duality > D.D. survivor on the field > Tribute Survivor (Caius for ex.) > What happen with him durin the End Phase.Ya then Survivor just don't get back.
But here the answer is easier - Why the f^^k you summon him during Standby PhasE? Survivor summoned himself on the End Phase that's rfg.But in case of Treeborn Frog - you can't activate Duality then.
2. You should looked al Phases, which are in Battle Phase and u will answer that yourself.There'r 4 main steps [and a few minor] - Start Step(announce that you enter in Battle Phase - last chance for cards like Formula Synchron,Throating Roar etc.),Battle Step(here u choose the target of your attack.Here you use yours Spell Sped 2 traps or spells - Mirror force,D.Prison,BoM etc.),Damage Step(kk the most gayest step in the game.He's the little moment between the hit of the monsters and the die of one of them.Here can be used ONLY Spell Speed 3 cards [Counter Traps] or cards, which specially designed the attack or defence of the monsters [Your favourite Honest or Shrink],then End Stape (End battle phase).
So that's why the opponent can ask for Response of his attack and then activate Honest
He actually asked you can he go to Damage step.So ya you can activate only cards of Spell Speed 3 or cards like Shrink, as i said.
3.I'm not so good in LADD's rulings, so you better look somewhere to be sure.I found something:
http://forum.tcgplayer.com/showthread.php?229894-2x-LADD-2-questionsHope i help