Lashed one of these together today - wow. Given that it's a handful of components it sounds massive.
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I used a iN4148 diode instead of a 1N914, but made it switchable between a germanium (1N34A) and the silicon one.
The thickness knob acts very much like the gate control on a wooly mammoth, so it'll do a lovely Muse-esque gated fuzz too.
I'll try to get some sound clips up tonight.