I'm not lefthanded but I also owned a steelseries sensei, its a very nice ambidexterous symmetric designed mouse. I used it mostly as a push-to-talk button but

I'm not lefthanded but I also owned a steelseries sensei, its a very nice ambidexterous symmetric designed mouse. I used it mostly as a push-to-talk button but now I just stick with a g502 logitech prometheus since I tend to favor heavier mouse. Its a shame there aren't more left-handed mouses developed, but the market isn't nearly as big as right handed mouses.