Maybe you already read the Boeroer' post about "Fast switching Shield" :
(From the Ultimate Challenge Topic)
This exploit work also with the Outworn Buckler (Timeless perseverence) but for reducing hotiles effects durations for the party. It is really good since it is not easy to deal with them (Supress Affliction only suspend them, Potion of Cleansing Purge reduce them, but none really purge them. About the Potion of Cleansing Purge, this is the only potion that scale with alchemy,