I know this is not the primary use case for using external GPUs, but I drank the Space to Think kool-aid in a serious way. Can anyone find a source or share personal experience that confirms that I could potentially use e.g. 2 additional (to the spec below) 4K or 5K monitors with a new MBP (so e.g. 4 5K monitors: 2 powered by internal MacBook Pro GPU and 2 powered by an external GPU)?
According to Apple, the new MacBook Pro (MacBookPro14,3 A1707, sans eGPU),
Simultaneously supports full native resolution on the built-in display at millions of colors and:
Up to two displays with 5120-by-2880 resolution at 60Hz at over a billion colors
Up to four displays with 4096-by-2304 resolution at 60Hz at millions of colors
Up to four displays with 3840-by-2160 resolution at 60Hz at over a billion colors