I have never tried hemp as litter. I have not seen it for sale around where I live. In any case, I'm all into using free resouces for litter.
From what I understand, hemp is a great absorbent product, and it smells sweet. Very nice for the coop or the brooder. I used free wood chips for a few years, and that worked great, but it did not have much of a smell. I chipped up some fresh pine branches and it smelled wonderful in the coop for about a week. Very nice. Over time, I have come to use shredded paper, which has no smell.
I keep my chicks in the brooder for 8 weeks. There was no need to clean the paper shreds. I just start off with an inch or two of fresh paper shreds and then add more paper shreds on top of the old shreds as needed. By the end of 8 weeks, I had about 5 inches of paper shreds in the brooder and only at that time was everything removed and tossed into my composting. No daily, or even weekly cleanings required if you use the deep litter method.
Over time, I have learned when I can get by with just fluffing up the deep bedding or when it needs a fresh layer on top of the old. In any case, the old litter remains in the brooder until the end of the 8 weeks. That greatly reduces the amount of work I have to do with the chicks and they seem to do very well with that system.

30+ years ago, when I first started getting chicks, I thought I had to clean out the brooder litter daily. It was a lot of work. Using the deep bedding method, I have eliminated all that daily work and now only clean out the brooder once after the 8 weeks and the chicks are moved to the main coop. That has allowed me to enjoy getting new chicks in my advancing years. If I worked as hard as when I was younger, I don't think I'd have the energy. In any case, I discovered a better way for me that requires almost no work and yet keeps the chicks clean and healthy.
When I used wood chips, I did it the same way - starting off with a small layer of wood chips and toss in fresh wood chips as needed.
I discovered that for 8 weeks in the brooder, there was never a reason for me to clean it as the deep litter method basically automagically absorbs and hides the baby chick poo. I suggest picking a brooder litter that you can use as deep bedding. If you are cleaning the brooder daily, or even weekly, then I think you could find a better deep litter resource.
FWIW, in the main coop, I also use paper shreds as deep bedding and the coop only gets cleaned out twice a year - once in the spring after the snow melts, and then late in fall right before we start to get snow again. It's the deep bedding method that is the magic and you can use a number of different resources for the litterthis