I've been using my magnacut mule pretty steadily for the last few months. I've used it to prep numerous fires, lots of tasks around the house, and carried it at work quite a bit too.
I've stropped and fine tuned the edge on the sharpmaker and have given it a few more decent sharpens over the last few months.
I definitely wasn't impressed with this steel straight from the factory. I felt like the edge rolled quite easily and felt pretty soft. That said, I think it may have softened a bit from the factory sharpening because now that I have sharpened off the factory edge, it is starting to perform better.
It does have really nice sharpening response. The steel just "feels" like it is giving good feedback on the stones. I have used my guided system to even up the bevels to 15 DPS and then use the sharpmaker ceramic rods for a 20deg microbevel between sharpenings. Couple this with a few light passes on the strop and this steel gets nice and shaving sharp quite easily.
I feel like this steel is more suited to a slightly "toothier" sharpen. I did take it to near mirror one time and I think it performed better with a rougher finish. The edge in these pics is a 600 grit diamond at 15 DPS with a few passes at 20deg on the white rods.
Now that I have used it a while, I am liking it more than I did straight from the factory and think it is a nicely balanced steel. It sharpens easily, holds an ok edge, and so far, has held up well to a lot of bushcraft abuse.
That said, I'm not sure it is much of a step up from the standard S30V blades and I don't think it holds an edge quite as well as SPY27. IMO, It is a solid workhorse steel, just not my favorite recent release.
I have not sharpened in a while and you can see a few rolls and micro chips in these pics. Also, there is one little spot of rust right on the edge. Not sure if it is from contamination or a weird spot in the steel mix, either way, it should sharpen out next time it's on the stones.