[iDemonix]

On Mac if you hit CMD+T you can just start typing a username (or channel name) and as soon as it's selected, hit enter once. That's how I navigate around Slack.

[codezero]

Yeah, I never got into that method, I guess I'm stuck on my IRC muscle memory. CMD+T is new tab, not search! :P

[yoz-y]

CMD+K works as well. For me it is better since that is the shortcut I use for quick open in QtCreator