Sorry for the confusion. I was so excited to see that I might be able to offer some info for once, as this forum has been very helpful to me.
Once my sponsor's app was approved (originally sent to CIC), my pr app was sent to Buffalo. Medical received. I needed to submit the FBI clearance check and mail that back to Buffalo.
The first time (I had to do this twice as the first document I mailed to Buffalo was "lost in the mail"), I went to the local PD and was fingerprinted. Then, I mailed the fingerprints along with a form specific to this FBI channeler and mailed it to their offices. Within one week, I received the FBI report and mailed that off to the VO in Buffalo.
I had to go through the steps a 2nd time to mail out the FBI report to VO as, again, it was "lost in the mail". The 2nd time, I took my fingerprints (I was smart enough to receive two fingerprint cards the first time) and drove to the channeler's office as it was not far from me in order to obtain my FBI report that same day. Then, same day, took it and overnighted it via usps to VO, as I had only a couple days left before the 60 day deadline.
I don't see why anyone that would be eligible to use a channeler would not. It seems like the best way to go! Thankfully, I went through a company that either was not very "swamped" or gave consideration to my situation (with regards to being lost in mail the first time & having a deadline to meet) and helped me out.
Muffy: I'm slightly confused about contexts...
"The first time, I mailed everything in and received the document within 1 week and mailed off to Buffalo." -The first time you mailed what to where??? Fingerprints etc. to channeler? ...
"Since my package was lost in the mail, I had to provide this document a 2nd time."
-which package? Your whole immigration/sponsorship package??? On route to Mississauga or to Buffalo?
"This time, I went in person and had my document same day. So, far no problems."... To a channeler? -Getting your FBI Clearence Document?
"They will accept the document from a channeler,"
"but it has to be one approved, listed on their website."
- on the FBI website, i.e. an FBI approved channeler?
"I paid only $34 for mine. Hope this info helps someone!"