I would guess the hemp will continue to become more absorbant over time. But IMO, the major advantage of hemp compared to microfiber is that the hemp is less subject compression leaking. Try your absorbancy test this way:
Saturate a hemp insert and a CB micro insert. Put a 20lb weight (books in a plastic bag would work) on each. Remove weight. Re-weigh insert. This should approximate how much the insert will hold after baby compression. I would guess that the hemp will do better in this test....
FWIW, my favorite insert is a small micro insert (or micro towel) toward the baby and a hemp doubler/insert away from the baby. In my Swaddlebees, I use a SB micro insert and a folded up Babykicks duz-it-all. The micro absorbs quickly and the hemp prevents compression wicking. Overnight, we use a CB micro insert and hemp fleece flat similar to the one you described, stuffed in a HH.
Saturate a hemp insert and a CB micro insert. Put a 20lb weight (books in a plastic bag would work) on each. Remove weight. Re-weigh insert. This should approximate how much the insert will hold after baby compression. I would guess that the hemp will do better in this test....
FWIW, my favorite insert is a small micro insert (or micro towel) toward the baby and a hemp doubler/insert away from the baby. In my Swaddlebees, I use a SB micro insert and a folded up Babykicks duz-it-all. The micro absorbs quickly and the hemp prevents compression wicking. Overnight, we use a CB micro insert and hemp fleece flat similar to the one you described, stuffed in a HH.