Yeah the double summoning was unique to Minato because of his relationship with Death if I don't remember wrong. Which is why Seta (Was that his name?) can't use it.

Wouldn't it be better to have just a giant Shin Megami Tensei thread? I always feel like I go offtopic when talking about the other SMT games. Anyway haven't gotten far on Devil Survivor I want to play but time restriction is kinda not helping and don't really feel like playing for ten minutes and putting it away. So haven't gotten past the first day...

Also finally ordered both Digital Devil Saga games so hoping that they arrive soon.