#1
Through the effects loops or between the guitar and amp?

I suspect between the guitar and amp, however I bought one today and haven't had the chance to go upto the practice room yet.
#2
Through guitar and amp, it has its own effects loop so it can seperate the guitar signal from effects signal.
Gear:

Esp Ltd DJ-600
Ibanez S520EX
Parker P 44 Pro
Traynor YCS100 Head
Traynor YCS412 cab
Boss NS-2
Boss DD20
Boss GE-21
Ibanez TS7
EH Soul Preacher
BBE Sonix Maximizer 462 rack