Someone at work has one, although I've not seen any data from it. It belongs to an organic synthesis group, and I think they for "quickie" protons while running reactions.
We actually have 400mhz, 500mhz, and 700mhz in the building(along with a home built solid state magic angle NMR with a 500mhz Oxford magnet). The 700mhz is pretty much exclusively reserved for the biochemists and only made available to everyone else when one of the others is down, but between teaching labs and research groups the 400 and 500 can get plenty busy.
FWIW, I learned NMR on an Anasazi Instruments 90mhz FTIR that was built around a Varian permanent magnet(I think from the 1970s)-the magnet was roughly the size of a washing machine. We almost exclusively used neat liquids and VERY concentrated solutions-I don't recall whether or not the instrument had a separate lock channel, but if it did we didn't use it. We'd instead put TMS in every sample, and bought solvents with 1% TMS already added.
We could do carbon and even some limited 2D work on that instrument(and I did it) although carbon in solution would sometimes require a crazy number of scans. I even used Cr(ACAC) a few times to reduce the experiment times to a few hours long. Even that could cause issues due to the lack of a lock signal as you could get peak broadening due to field drift in that time. Even on a fairly clean spectrum, splitting was "tight" and certain types of molecules(esp. alkanes) would give something that was better described as a "distorted singlet" than a true doublet or triplet. I recall running NOESY, I think, a few times, and the software(which was written by someone with a very dry sense of humor) would prompt "Enter T2 Relaxation Delay. If you have not performed a T2 relaxation delay experiment, what follows is a waste of time."
It met our needs well as a teaching/light research duty instrument. For heavy research use, we had a contact at the University of Kentucky that would run samples on a high field instrument if we needed them.
One last thing-on the 90mhz instrument, it was second nature to put a sample in and check to make sure it was spinning by looking down the magnet bore. Of course, that's really needed, but it also brings in spectral artifacts like spinning sidebands. You can't really look down the bore of a typical superconducting magnet, and when I started using them and would try to spin samples I would find that it had been so long since it had been done on ours that the spinning pneumatics wouldn't work. I talked to our staff NMR spectroscopist, who wasn't overly concerned about the fact that they wouldn't spin since "that causes other problems in your spectrum" and "isn't really necessary."