No doesnt work if you cast reverse on a character when the poison takes its first hit the reverse status dissapeers but the poison doesnt take any hp of.
If you equip a ribbon this would probably stop the negative effects and still give the high stats the sheild has. Or if you equip renewing morion it would help against poison, hermes sandals would help against slow and quasimodo boots would help against sap. Obviously you cant equip 2 accessorys so would have to choose 1 or the other. It might work eh?
It’s a trade off with the firefly – you get a +2 strength bonus when equipped. I guess it would be used while fighting boss-type enemies (only provides LP) early in the game if the rest of your accessories are no good.
The Firefly — some players like to play low-level games. The Firefly can help with that.
Nihopalaoa: because items have near-zero charge times; in fact, Item use is faster than the Attack command (very odd). Translation: bomb time. Potions are not the thing to be throwing while wearing that accessory. Throw the good stuff. The problem is finding these more appropriate items and maintaining a good stock of them. If you’re using a cheat peripheral, however, I think you coud set a Gambit "Foe – nearest –> Elixir" with that thing on (and infinite Elixirs, obviously, or perhaps even infinite Phoenix Downs) for insta-kills (I ought to try that on a boss to see if it works…). At first, I thought it set up a permanent Reverse status, so when I actually tried it I was also initially disappointed.
Ensanguined Shield: because its evade rate is ridiculous. Ribbon doesn’t help remove the effects; however, no one said you had to keep it on 24/7. When the enemy winds up (if it’s a great enough threat), open the camp menu, strap it on, wait for the enemy attack to resolve (most likely you’ll block it), and then take it off. The conditions it inflicts (particularly Sap) make it good for creating extremely specific Reverse gambits. I do agree the penalties for using it are a bit harsh, though.
The Firefly is a mock-up, plot reward item (kinda like the Dawn Shard). I don’t think you’re supposed to actually wear it.