#1
Will the pedal work without the effects loop on an amp?
Peavey VTM
Marshall 8412
Fender 4x12 loaded with t75's
Epiphone LP-100
Fender Stratocaster Highway one
#3
Well I wanted to make sure before spending money.
Peavey VTM
Marshall 8412
Fender 4x12 loaded with t75's
Epiphone LP-100
Fender Stratocaster Highway one
#5
Pedals don't need to be in Effects Loops to work, the effects put in the Effects Loop are just put after the Amps Preamp, where the overdrive is generated. Delays are usually put in effects loops, but they still work without loops.

Also I suggest buying one of these used, I've been looking at a DD-20 too and have found some used on Guitar Center's website for as low as $99, sure beats paying over $200 new.
Rig
Fender 09 Standard Strat>Wilson Ten Spot II Wah>Boss DS-2 Turbo Distortion>EHX Big Muff Pi>Boss CE-2 Chorus>Crate V32 Palomino 212
Fender Deluxe Active Jazz Bass>(Same Pedals)>AcousticB20

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