Tongue tied, you're probably already gone. But I did this last weekend--cytomax in camelbak (rinsed out as soon as I got home and hung to dry--no residual taste the next day when it was filled with only water) and ice water in the insulated bottle. At stops, I poured the water bottle into the camelbak and refilled the bottle. Bottle was also great for squirting water in my helmet and on my face (also good for cleaning out road rash!)
Hope you had a great ride!
"Well-behaved women seldom make history." --Laurel Thatcher Ulrich
'09 Trek WSD 2.1 with a Brooks B-68 saddle
'11 Trek WSD Madone 5.2 with Brooks B-17