Is it possible to bring back Nagato (Pain) using Edo-Tensei? During Nagato's last fight with Itachi, Bee, and Naruto, Itachi pierced him with his Totsuka sword. 

As per the Naruto wikia page on Totsuka,


  It is an ethereal weapon with an enchanted blade capable of sealing anything it pierces.Those who are stabbed by the sword are drawn into the jar and trapped in a genjutsu-like "world of drunken dreams" for all eternity. 


My question is, can those who were sealed by the Totsuka sword be brought back by Edo-Tensei?

Does it seal the soul permanantly like Shinigami?

The same question goes for Benihisago as well.
My theory:

Sealing 'someone' doesn't mean that they are going to seal the soul of that 'someone'. It is not explicitly mentioned that the Totsuka Sword includes the soul up to the extent like the Shinigami. 

The body can be remained in the "world of drunken dreams" but the soul can be released. Edo-tensei only requires a body of a living person as a vessel, then a deceased person's soul and bound to it. So it is possible that a person struck by the Totsuka Sword can be brought back by Edo-Tensei.

Update: 

As per Kaguya Otsutsuki about Benihisago, It seals the soul as well. Once sucked in, releasing Edo-Tensei won't release the person. Its mentioned here Benihisago.