I use it strictly to obtain larger print sizes and I find that thus far, it has been a lot more expensive an undertaking than even medium format when it comes to producing top notch negatives and prints with consistency. In terms of prints, I feel like a good 6x6 or 6x7 neg looks pretty much flawless up to 20x24. But a good fine grained 4x5 neg does not really start to open up in terms of enlargement potential until 20x24 so I look forward to doing prints as large as 40x50 from 4x5.
It's a fun format for sure, but it is not as simple as many on here make it sound, at least for me anyway:
Anyway, I used it today for about two hours on my ski area commission, here it is setup in -10F temps...