@doy: hrm, yea, init scripts spend time having to reconfigure what's already configured once a module is loaded. I'm skeptical about visibility though, for modules that are hidden on start.
Then which way you decide to do it depends on how often you recycle :}

oh, you just pointed out !amp_show
...
Just in case you use dynamp or geekamp, know that these modules register this bang name.

For distinction, I suggest prefixing your scripted-bang names with some character.