Anybody else use a bugout bottle instead of a saddle bag to transport tubes, tools, patches, and wallets?

Pros:
>you can put it on any bike
>take it with you, put your lights and computer in it when you take it.
>keeps water in, so it can keep it out.
>carry allen keys or axel keys
>bike looks clean

cons:
>cut water supply in half.

I do this for my 26 mile round-trip commutes. Also keep a thing of sunscreen in it.