I am a fan of the "Extreme" water bottle also, it's light and portable and you can go through about 26 gal of water before you need to replace the filter.
That's a lot of water to drink. It is priced quite reasonably too.
Here is the scenario... you sit in your 2 piece climbing stand and your foot inadvertently bumps the lower section while there is no weight on it - and it slides down the tree, out of reach!
OK, you are safe - you have a string tied from the upper section that you are sitting on and the foot portion that slid 4-5 feet down the tree. All you have to do it pull the other section up, reposition it and you are back in business, correct?
Have you ever tested this theory?
I have -...