Would a character be able to use a scroll of Contingency and then when the correct circumstances for Contingency are met could they use a scroll to cast the personal spell?
When you cast contingency you cast the spell linked to it immediately after, not when the conditions are met.
Claxon is correct. You'd have to use up both scrolls back to back.
Okay, I was confused about how it works it seems. So with a contingency scroll used a character could also use a magical item to cast the spell linked to it?