Another XPan owner here. Yes, it's a great camera, and the lenses are lovely, and the aspect ratio is really great, with plenty of interesting uses. I rarely use the 'normal' 3x2 mode you can select, but there is a certain joy of realising that if you switch to it, it shuffles the film back by counting sprocket holes so that you don't lose any space on the film.

The sprocket reading mechanism uses IR if I remember correctly, so you can't use IR film in the XPan without getting leaks from this mechanism.

Also, labs used to automatically mess up cutting negative into strips for this due to the unusual framing, so you are best to home develop or use a pro lab that understand this sort of thing.

If you like the look, but can't or don't want to afford an XPan, the other option that I can think of is to get a Mamiya 7 with their 35mm adapter plate, giving the same aspect ratio. I've not tried it, because instead, I just shoot 120 film in a Mamiya 7 and crop if this is the aspect ratio I want. I also get shift for free doing this...

The other option i've tried, which is mind blowingly awesome is a Fuji 617, which is the XPan aspect ratio on 120 film. The problem is that you need an 8*10 enlarger to print these, and obviously the cost per shot is higher, but the quality is beyond what you can imagine.