I’m not sure what a Wal-ish tone is, but my love for this thing was reaffirmed over the past couple of days. I think it probably can because of the mid-range punch and grind, which I associate with the Geddy Wal days.
For the past few months I have been cycling through actual tube-based pedals looking for that direct tube amp tone on a budget. I recently settled on an EBS valve drive, running into other things, which is great. But I’m having some noise issues from it. So I decided to try the YYZ to see if I could get some of that tube amp vibe from it, not just the Geddy vibe. And whaddya know? It’s perfect. I like it better than anything I’ve tried so far for that slight tube amp warmth and breakup. The grind it produces is phenomenal, especially in tight mode. And the dirt blends with the deep channel so smoothly. I actually want to get a second one so I can have switchable tones. It's just that good. So many tube and tube-sim pedals have come and gone since I bought the YYZ, and the YYZ remains.
That being said, I tend to prefer more of a slight distortion over the top blended in, and the midrange grind the YYZ produces is phenomenal for that. I'm not into the breaking-up-tube-amp-farty kind of overdrive. If you're into that, it can do that too, though.