Sigils can be placed in a dormant state, As I said you can craft up to three at a time and as such all three can be pre-crafted and saved for the right time to use. However prolonged storage of sigils can put a toll on a person. But a day wouldn't be all that hard for an Asylum. =)

EDIT: Oh and did everyone read my important post. The one where I outlined how everyone will be introduced into CA. It is useful as it will help everyone understand what is to come, not to mention entertaining as you all can plan out accordingly.