For stills, this would be a fantastic, if pricey, upgrade from my X-T1.
But my real interest is video. While the footage looks fantastic (indeed, as it did/does with the X-T2), for practical use the camera dies the death of a thousand cuts: no zebra or waveform, reportedly unimpressive AF, lack of headphone jack, record times limits, file spanning (Fat32 4GB limit). And in the Cinema5D overview, a number of flat out bugs that, while hopefully fixable through firmware, don't inspire much confidence.
And then there's the ongoing lack of updated lenses. A nice feature of the X-H1 is the though put into silent operation; ironic, given the noisiness of some of their nicest lenses.
If I were to buy for video, it would probably be and X-T2 with grip (much cheaper now), but most folks who've gone that route have moved on to other brands.