Just ordered a Contour Shuttlepro 2 (Contour Design, Inc. - Innovative Ergonomic products for your computer.)

I was wondering how other users integrate this product with their keyboard and mouse setup.

Do you position it on the same side of keyboard as your mouse (ie keep switching between Shuttlepro and mouse with the same hand), or on the opposite side (ie mouse in one hand, Shuttlepro in other, keyboard in between)?

I guess I'm wondering how easy it is to use left-handed....