i think its only worth it if u got a shit ton ( of outdoor ) and u arent going to make hash, and want to process it all urself or with one other person in hours instead of days.
looks like you have to really molest the buds to get them trimmed, and then the bud is only trimmed to the level of the outer bracts, leaving all the stalk from these leaves tucked inside the bud , which I would then want to manicure off to ensure high quality end product. It seems like it would really rape the trichomes and the bud doesnt look nearly as nice as it could, as its very easy to spot a trimmer trimmed bud imo. Get a couple of trusted friends and have a sit in