Refering VMware KB, when accesing to ESXi you can switch between DCUI/Console using [ALT+F1] key.
But in out-of-band console metal access to ESXi, it seems the keys don't work and only DCUI can be used.
Of course SSH connection can be used instead under normal conditions, but I assume their are possible situations in which SSH connection cannot be established, such as switch failure on the upper level of the Metal server, or incorrect NW settings put into the ESXi. In those cases out-of-band console operations are needed to check status and operate virtual machines, or recover Network.
Therefore it will be good if there is a way to execute console operations out-of-band in ESXi.