Finally got the chance to try out my Spider IV 75 with an old Boss fuzz box and my Morley Wah/Vol pedal.

With amp presets that are heavily driven/distorted, the fuzz pedal added nothing to the sound at all.  For cleaner presets, it did what it was supposed to do.

The Wah acted like it should, as well, when used with presets that did not have pitch/phase shift FX going.  If the preset did, then the wah sometimes had almost no effect on the sound - because it was used at the start of the tone chain (PRE).  I suspect if I wanted to use Wah with these presets, I would use the FBV Express pedal set to POST wah.

So it seems, when using an outboard effects pedal, there are some that will work better than others - for some sounds.

I tried this both with a Strat clone (clean rhythm and heavier bridge humbucker) and an acoustic-electric 12 string.