not sure if SE has it wear it can interupt under level 99 but ive been on RDM and BLM/rdm nuking for 10 years and i never been interupted i can rememmber if even sub RDM using AQUAVIEL not even in 113 skirmish's. cant see it not ever happening if it isnt 100% at lv.99
SOMEONE please add info if this is correct since i always thought it was skill based on duration and caries on level till 99 when it becomes 100% if UP