Here's a couple of photos of my verified build:


I did experience some strange behaviour though when I first turned it on (with the Depth control at minimum), which could have passed for the 'envelopephaser' effect that Helge mentioned. It turns out that the Iabc inputs of LM13700 don't like to be so close to ground (actually two diode drops above) , and phasing didn't start for me straight away. I played around on the breadboard and replaced R8, 10k on my PCB layout, with a 47k. Now that problem is solved.
I also used a 47k Log for the Regen control instead of 47k Lin, which makes sense as it's actually audio that the pot is dealing with. The most usable resonance sounds are higher up, but I'm still finding I want the whole range of the pot rather than using a lower value pot.
Finally, the regen on my build is a little further from self oscillation than on my breadboarded version, so I'm going to experiment with maybe dropping the value of R24 to 8k2.
I will update the schematics and layouts with these changes ASAP.