I find that tedious. Mainly because it's really easy to switch between chrome and firefox via keyboard, but to switch between profiles/containers requires mouse clicks etc.
Not sure what platform you're on, but I switch between Firefox containers and profiles primarily from keyboard.
Profile switching is the usual app switching, handled by the desktop environment. Just like Firefox-to-Chrome would be.
Container switching is just tab switching, which Firefox handles well enough. If you need to go deeper in your tab history, you might need to scroll/click, but for the most-recent 9 tabs, it's right there.
