« on: March 04, 2014, 06:26:56 AM »
Why remove it? It's a great grip.
Agree 100%. It's a great palm rest to raise the lens just off the palm of your hand for fingertip control of zoom and focus. And, while I would not necessarily call this a best practice, you can also use it to hang the lens from your jeans pocket if you have it off the camera temporarily but want it within easy reach at a moments notice. I've been at a dead run with it hanging there and never dropped it.
It is also preferable to me to have the lens hanging by the tripod collar using a C-Loop or similar rig. When it hangs this way (from the shoulder rather than around the neck), it tends to situate next to the hip closer to the body whereas when it hangs from the camera strap lugs the lens tends to stick straight out sideways where it can bang into all manner of door frames or clock little kids of a certain height. (I've unintentionally caused tears on more than one occasion in this way.)
I owned this lens for years before I even knew the collar was removable. It's so useful that I seriously can't understand why so many people can't seem to wait to take it off.