The each string pickup is a valuable addition. The subtlety may be a common feature of tone control--at least, it has been in my experience. However, once I got it dialed in on Barbera it became an important part of the tool.

My suspicion is that the more you play the Slim, the more you're going to like it. Somewhere along the line you might try a distortion petal with the nylon--really interesting stuff.