It should eliminate OCR scanning errors and delays stemming from that and manual entry of information due to scanning failures. I doubt it is any faster than a clean scan, though.

I did mine using the assisted entry and have a barcode. I'll report back on the time it actually took.

Since any process involving human intervention, which OCR typically does, has the greatest potential for inducing errors, I will always use whatever method offers the least incidence of human involvement.