Yeah I have and it points to the same old thing Cancerours, Just like Burnt Toast, and I like my toast slightly roasted or caramilised. tried a pint of water after a no rinse Iodophor multi, Well tasty.
You can effectively make it into a no rinse solution, 10mls to 16 litres of water... I use this all the time for bottling and fermenters etc, I found that a strange taste I had in my beers when I was using sodium met disappeared when I switched to iodophor...
I havnt heard of anyone using Iodophor straight as a sanitiser? that would be hardcore!
I wasn't going to comment further until after Sunday too, but...
I haven't noticed any taint using a 15ml per 10 litres solution. The comp feedback could say otherwise, but my beers have been much better since I switched from sodium met and plastic barrels to no-rinse iodophor and glass carboys.