We used Fieldprint from an office in Boise, they took my Wife's fingerprints with a electronic scanner and then sent it directly to the FBI for clearance. They emailed back an attachment with the results, which we attached to our application. All in it took a few days to get the results back.
I found it a bit of a grey area considering they say they accept third party channeller's from their approved list, but almost all of the ones on the list provide PDF results. Which then have to be printed, which could be considered a "copy", which they say they don't want. Fingers crossed that we have no issues!