I took this approach also and it's been beneficial. It's seems even non FDA meds arrive without issue, however amps and vials are getting snagged regularly. I know many have success but I have had 0000.
I'm planning 1 more attempt at all amps and vials, it will be broken down in 4 packs 4 diff addresses. This is the only way I'm willing to test it again.
Also this should prove no address flagging as some claim. I don't think so...the number of amps and vials I've tried would have me flagged and other meds have arrived after and since.