@wiking Using the Intel gpu will allow longer use on battery, probably the main reason(?). For application performance you would need to determine yourself, with that hardware setup.
Going forward I suspect at some point your system might switch from i915 to Xe when Mesa (24.1+) and the kernel (6.10) so that may/maynot improve the Intel performance.
@wiking Another comment, there are a number of applications eg alcritty that will automatically use the offload GPU (visible in nvtop or nvidia-smi) without the need for the switcherooctl command. I suspect there are more…