How to enable it: Hold down [F11] and type "RSHIFTSCUZZERCAM" (a VAL message will drop down once you have typed RSHIFT and another one when you finish typing SCUZZERCAM).

What does it do: puts you in peep cam mode on each of your scuzzers in turn and allows you to flip through them.

Hold RSHIFT then
NP_7 = forward
NP_8 = backward

NP means number pad (the square of numerical keys over on the right of a standard keyboard). When you use them the NumLock must be off.