This set is a little bit more positive than the "10 Brain Coral Slab Crimps" I think my overall feelings for this set are the same as the one mentioned above.
Although this holds can work as crimps (on slab and vert) they are not the most comfortable, they do work really well around aretes and/or volumes for bumps, heelhooks and toehooks. I do think that this holds would end up getting use as feet more often than hands. For those reasons I wouldn't recommend them for a home wall (unless you are looking to buy pretty comparable feet to outdoors for a 15°-45°) but I do think they can work really well for a commercial gym.
If your gyms has a ton of slab or your community just enjoys crimping on horrible holds this would be a great buy.
Comfortableness/Ergonomics of the holds: 2/5
Balance of Lefts, Rights, and Ambidextrous holds:3/5