Some of the effects require gimmicks, most do not. The ones that do are:
3 Card Routine (You can get around it with a little thought, the gimmick is only required for one phase of the routine)
Smoke (Unavoidable)
Extreme Mental Effort (Unavoidable)
Also, when you say plain deck... two effects also require a little bit of setup:
Smoke (Need to do a little bit of work beforehand on something, but it's worth it and not too hard)
Out of This World (Can be done in front of the spectator, and is taught)
They're all amazing effects though I agree with Sean's review, and I haven't regretted the purchase at all, I love it...
Hope this helps.