Covers:
Chrome, nickel, gold, plastic (black like EMG).
Bobbins:
Double black (standard), zebra, reverse zebra, double creme, double white, black/white, reverse black/white
Poles:
Nickel and black pole pieces, gold and black pole pieces
Spacings:
Tunomatic, Tremolo, and neck spacings
Seven string bridge, seven string neck spacings. (no covers for seven string pickups, standard double black only)
That's 37 different ways you can have a Nunchucker Humbucker (all the other pickup models too)
You can also choose one of four different magnets, but technically we change the name then for some (Alnico II = TVH bridge and PVH neck). Alnico IV magnets are recommended, despite what Simon H will come in here and tell you
Vintage Gain:
http://www.ormsbyguitars.com/audio/pickups/TRACK011.mp3Modern Gain:
http://www.ormsbyguitars.com/audio/pickups/TRACK015.mp3Nunchuckers are used by:
Chaos Divine
Combined Death Toll
Psychonaut x2
Graham Greene (Reasonant Project and Jac Dalton band)
Psycroptic (soon!)
Gasoline Inc
Hyte
Dogs of War (soon!)
Grotesque
Sins of the Father
Vespers Descent
...and many more