>>3469424> X-E3 with the 27mm pancake would probably be a bit smaller than the X100Yep; they're almost exactly the same size, and it looks like the X-E3 is a smidgen smaller.
That being said, 27mm is normal-equivalent and f/2.8 vs. the X100's wide f/2 lens, so it's not a perfect match.
THAT being said, I'm not sure the camera he's looking for actually exists.