> Vim and Emacs style movement commands are faster than the mouse in certain contexts, but I'm dubious that's universally true. "I want to jump to line 123" is easy, but what about "I want to move the cursor to the open brace character right there"? No matter how much of a seasoned pro you may be, you're going to have to think for a moment about how to do to that: "let me count the '{' characters between the current point and where I want it to be. Three, so '3/{<cr>'." The mouse may make you move your hand, but it doesn't make you have to stop and count.
But vim doesn't make you count either... press "/{" and then repeat "n" until you land on the correct character. Also for selecting lines shift+V and jk{} etc will get me there with no counting. I've used vim for years and I never count I just use visual mode.
I'm not positive that's going to be faster in every than using the mouse, though, still. And selecting lines with a mouse is, in most editors, triple-click and drag. I'm not saying that's necessarily faster than using visual mode--just that, again, it's not necessarily slower. It seems to me that cognitively they're fairly similar, and it doesn't feel to me like using the keyboard is conclusively faster in this circumstance.
But vim doesn't make you count either... press "/{" and then repeat "n" until you land on the correct character. Also for selecting lines shift+V and jk{} etc will get me there with no counting. I've used vim for years and I never count I just use visual mode.