The scanner itself is very fast for document scanning in both simplex mode as Simplex / reverse.
To me the only weak point of this product is the software suite that seems a bit dated and lacking almost certainly ergonomics intensive use. Even if the bundled software would need a renewal installation is not complicated; and it works!
I used OCR to convert typed text in Ms Word documents, and I have to say one word: PERFECT.
I try to OCR on my handwriting and it gives nothing conclusive, but hey it's no surprise since I think no OCR is powerful enough for now.