No worries, mostly I wanted to see what happened, cause I haven't really tried stacking any of those pedals. Just went back to the board and those 3 pedals make sweet sweet music together.
Anyway, the pulsing tones I'm talking about would be similar to the Suneater demo you posted from musictoyz, there's a couple points in the demo (around 1:20 and 3:40) where he holds some sustained chords and it gets all beautifully rumbly and stuff. So it's like that, but much more pronounced and sustained due to the extra gain/fuzz involved. with the Velcroar->LR it gets to the point of almost lower octaves and stuff popping out in places. So not really tremolo like for the most part, but it kinda gets that way at times.
By pumping, I'm talking about an effect that happens sometimes with fuzz. If you really overload the pedal then what happens is your pick attack gets really squashed and clips much harder than the rest of note, so the effect you get is a kinda squashed pick attack that blooms shortly after and gets to full volume again. In certain degrees it can sound quite cool and be very useable, in really high doses it's a bit hard to work with. It happens a fair bit with the Suneater in the musictoyz demo in the really good and useable way.
By harmonics, yeah it's a sorta feedback type effect I guess. Basically the harmonics are what makes fuzz so great to me, they're all the little overtones, and high frequency stuff popping in and out on top of the notes you're playing.
Also I'm not really describing any popping or clicking, perhaps a bit with the extreme pumping, but definitely no abrasive pops or clicks in the sound.
Also, glad you enjoyed the videos, I do them mostly for the fun of it, and a chance to create some music. I don't have the time to play in active bands and stuff like I used to. I'm really glad to hear you enjoy and them and extra glad that they get a little attention for the awesome things that Tom builds.
why must I use so many words?