[timewarrior]

One problem with this is that it’s a combination keystroke involving two special keys and tab. That is bad for your fingers especially if it something like tab switch that you use a lot.

With Cmd-[] you just use total two keys which are easy with two hands.

[xahrepap]

I just noticed that CMD+Alt+left/right also work. You might be able to push CMD+ALT with one thumb and left/right with your right hand