I have a Fujifilm G617 in a hard shell case a few feet away, and it's a beast. There's nothing whimsical or convenient about it. It's a tool but it's not a fun camera to use. In fact, it's one of the only cameras I've ever used that penalizes spontaneity.

I've never used a Widelux but having used the Pano mode on my iPhone, I kind of get the concept so I can say that nothing about shooting Widelux is like shooting an actual 6x17, and that's almost certainly a good thing.

When you're evaluating high end cameras, ultimately the most meaningful data point is how they make you feel when you're shooting them. A Hasselblad feels like what I picture driving a Lincoln Continental feels like. I suspect that the Widelux-X would make the user feel things, too.