Hmm? The boss goes invulnerable on both of those fights so you could use, though you're not in too much jeopardy of losing your stacks really. I really like playing monk, but I haven't got the gear drops to play it in fcob at all. Unfortunately I accumulated too much NIN stuff, DW daggers and all, and I hate NIN lol, my monk still stuck in mostly 110 gear. ( only DW drop I have for monk is chest piece.. yay! >.> )