Ignoring the price for a second, 2 things put me off the X-H1. Firstly it doesn't have quite the classic form factor that the XT's have. It sort of looks like a cross between a DSLR and a Fuji. Screen looks nice enough but what I like about Fuji normally, is that a top screen isn't really needed 90% of the time. And secondly, it's a fair bit bigger than an X-T2 which is starting to negate one of the nice benefits of Fuji vs DSLR's.
Love the idea of IBIS though. So although, it's highly unlikely I'd buy an X-H1, I'm looking forward to seeing how the IBIS performs in the hope it might make its way into the X-T3.
IBIS seems to get quite a mixed reaction but when I had an EM5mk2, I absolutely loved it. Yes, many lenses already have OIS, but not fast primes. Something like the 16mm 1.4 will probably be quite usable hand held in near darkness. I found that great for shooting in a city at night where a tripod can draw too much attention and be a pain.
Plus we have the possibility of this being used for pixel shift or star tracking etc. Looking forward to seeing the reviews....