It's a bit better when you do that. But the game occasionally wants you to jump across the xy plane instead of just the x or y axis. The side cam doesn't work for that so I wasn't incentivized to switch. Maybe a 90 cam rotate button would help.
Hm? The camera isn't locked to specific angles, it's freely controlled with the mouse. Which button are you pressing to lock the camera to the x or y axis in the first place?