Compared to to the other ambidextrous mice I tested, primarily the Mionix Avior and Razer Taipan, the Sensei Raw is perfect for claw or hybrid claw/palm grippers. It’s hard to find a mouse significantly lighter than the Raw’s 90 grams. The Sensei is used frequently at the pro gaming level, and Steelseries hasn’t changed its body design since its introduction, and that’s a testament to just how much they got right (though, granted, Steelseries also sponsors many e-sports teams).
If you’re looking for a left-handed mouse, go with the Steelseries Sensei Raw. It’s affordable at $60 and one of the best-designed gaming mice around. With software that, finally, doesn't suck.