Theoretically it could work. But then again aren't souls in Naruto composed of chakra too? Plus the espada may be too fast and destructive for that attack to land. Nagato would also have to sense them as well.
S h i c h i b u k ai
A k a t s u k i
E s p a d a
There's also the question of whether or not the spiritual beings in the bleachverse are of the same concept and substance of the spirits in the narutoverse, since "spirit" or "soul" are abstract concepts and can vary greatly in how it is represented from 1 fictional work to another.
In the Bleachverse, spirits seem to be composed of subatomic particles that constitute and mirror the look physical body that it is from. These spiritual beings also exude waves of energy referred to as raitsu, showing another property that can set it apart from Naruto.
In the Narutoverse, we've seen 2 representations of a soul. One, where it is a long, cylindrical like substance(used by the hell realm Pain). Another being the more human shaped version that seems to be made up of either chakra, or spiritual energy, and but unlike bleach, does not resemble or mimic the appearance of the human container.
With these differences, it may be impossible for Nagato to interact or sense the souls of Bleach as he can with the souls and spiritual aspects of the Narutoverse. This also works in reverse, as that means yammi cannot use his soul eater ability. Comparison of physical attacking capability is the only solid method for comparing these 2 universes. even though the Espada would not be able to be sensed, they still can be touched.
It would be sooooooooo much easier if we were comparing martial arts mangas to each other, with no supernatural elements to it.
its not a fan boy thing not at all
because i think most manga characters could blow the espada away, from fairy tail, psyren, D.gray man, one piece, naruto, kekkiashi, soul eater, and air gear. i just think they are much weaker than the people being talked about in the thread or maybe i just dont like them much