Continuation: As I looked down the handles to the metal, I found that 3 of the 12 in my package were inserted crooked, left/right, to an uncomfortable degree. I didn't worry about the ones that were crooked up/down. I contacted the company with pictures and sizes and they sent me replacements for all 3. Great customer service!
As so many new hobbies go, I ended up buying a DMT 8000 grit sharpening stone, a pack of slipstones and a Flexcut slipstrop that supports a bunch of shapes. Of course it all cost more than the chisels themselves.
For my first tool, I sharpened what is probably the hardest chisel to sharpen in the pack, a large curved U gouge (7L 20mm). I like a challenge.
I found it difficult to verify if the factory bevel is around 22.5deg, due to the fact the chisel is curved. I didn't concern myself much with the degrees, and just honed to the default bevel, and made sure that the edge is paper-cutting sharp on 1200 grit. (I don't have my 8000 stone yet, as I bought it while visiting family, and couldn't bring it back with me for now.)
Got it cutting through poplar without much difficulty, seeing as I have no experience relief carving. I know some of you are about to say "poplar isn't the best wood for carving; you should use basswood", but as I intend to take on carving as decorative addition to my furniture making, I need to learn to use the tools in woods that I will build with. That means poplar, oak, walnut, cherry, etc.
The steel feels good, and I didn't find any rolling or crumbling of the cutting edge in my short stint trying it out.