Hand Strap

I have the 30D with the battery grip and I shoot many portrait shots on stage/indoors and don't like my neck strap getting in the way all the time. It doesn't look like the hand strap, Canon E1, would allow me to adapt it for both landscape and portrait work without taking my hand out of the strap. Am I correct in my thinking and if I am is there anyother suggestions from anyone. Tonight for a photo shoot I just took the entire neck strap off but there was no support and my wrist.

You can use it in vertical without taking your hand out of the strap but you wont be able to use the Grip's vertical controls of you do so.

Sorry.

Robert