The whole topic of FBi channeler vs Direct from FBI was relevant in the days when physical copies used to be mailed / had to be scanned. FBI used to print their documents on a special paper with security features and watermarks. As a channeler provides soft copies(pdfs), applicants ran into the issue of not having the security paper to print them on.
Now, FBI provides and I quote "Your results will be provided on standard white paper and returned to you by First-Class Mail via the U.S. Postal Service". You can check this on FBI's website here https://www.fbi.gov/services/cjis/identity-history-summary-checks.
So if you were to use a channeler and print their pdf on a heavy stock white paper, there is no difference between that report and the report that comes from FBI without a channeler. Plus, you only have to upload it now.
To use channelers or not these days remains a matter of conscience more than the end result.
If anyone nows something I don't, please let us all know