um i believe flyers were alowed at the GT thats what my friend who works for GW said any way who knows though they always get their wires crossed... as for asking your oponants permission.. you dont have to. its is not VDR. and its worth itive been planing to get one for a while tho im considering selling my eldar army. I have 2 Valkyries for my daemon hunters army. I used one in a GW tourny and no one blinked.