Old yeast cakes will slightly flavor new beer, so it is always a good idea when you re-use a yeast cake to plan on moving to heavier/maltier styles each time, NOT to lighter style.
If you reuse a stout yeast cake for a cider, you are going to end up with a slight stout taste in your cider. If you're into that kinda thing, go for it, but it sounds like a bad idea to me.
Primary #1 - Midnight Ryeder (Midnight Wheat and Rye)
Primary #2 - Florida Weiss
Primary #3 - Kane-DOH APA (Honey Citra APA)
Secondary #1 - Downtown Flanders Brown (brewed August 2012)
Keg #1 - Raspberry Florida Weiss
Keg #2 - Cinnamon Raisin Cider
Keg #3 - NONE!
Bottled - NONE!