@Ryley -- I use iodine tablets and so far they aren't very fiddly. I also cut corners and don't treat the water I use for my boil-n-pour food because I'm boiling it. I use the 30 minutes it takes for the iodine to finish to boil and "cook".
I asked largely because I like the idea of the filter for the AT. After researching the iodine question, I do not think it will hurt me, but 6 months of iodine water makes me at least consider other options.