Norton stones seem like solid stones to me. I've started using their 220 grit one quite often and it hasn't let me down. When you soak it, it doesn't hurt to leave it soaking for longer than necessary...I usually leave it for twenty minutes to a half hour or so and go do something else while it soaks.
the 220 side works like a charm for reprofiling, but if it's going to be your only stone, I highly recommend getting a good strop. That will give you an extremely useable edge...220 grit for reprofiling and establishing an edge, 1000 grit for putting a reasonably fine scratch pattern on the edge, and a strop to remove the burr and put a little finishing touch on it. Works like a charm for EDC/Work knives.