Could you possibly compare the shape to other mice?
I've never owned a FK1 (only Zowie mouse I've ever had was an AM-something).
Could you compare it to the FM and the GPW specifically, please? (provided that you own these mice)
Talking about dimensions means surprisingly little. The GPW and the FM almost have identical dimensions.
But in my hand, at least, the GPW feels like a tiny, tiny mouse, whereas the FM feels gigantic.
Does the model O feel larger or smaller than the FM? Larger or smaller than the GPW?
Thanks. (rep added)