Any question answered...

No particular reason to leave the lid off. I just dont like my tool bottle to look like a drinking bottle that's all. And if like me you've got tons of bidons laying around collecting dust, but without a so called big mouth you can just saw off the top. Really no need to spend cash on a new bottle for this.

Seriously the stuff doesn't jump out? That would be my worry.

Haven't got loads lying around but it's the kind of thing you can always find without fail isn't it. Just got to pick what stupid sports nutrition I want to advertise on the side...