I think some of those ICs might be fake.
Soft clipping, and there is a capacitor in series with the diodes so DC leakage shouldn't be an issue.
I think I just used 1N4148s and it sounds fine.
I quite like the pedal but it's a bit noisy. I like your choice of diodes. Although I usually use BAT41s where others might use Ge. I always break Ge diodes!