@RLB it’s great your happy with your IQ4 back. It’s a great one. However, it’s also the most disappointing Phase One product launch ever. The firmware is still lacking lots of stuff and this after 7 months now.
The Fuji will be an amazing tool to work with and offer a few things impossible before in MF. I don’t think Fuji needs any luck, their lenses are fantastic (can’t say that for all Phase One lenses...) and with C1 as a software they have that side covered as well.
And you do know you can actually use to different systems at the same time.