From the Big White Book concerning Warders and their bonds:

“The bond gives the Warder the gift of quick healing, the ability to go without food, water, or rest for long periods of time, and the ability to sense the taint of the Dark One at a distance. He can also sense certain things about his charge, including her death. The bond allows the Aes Sedai to know if her Warder is alive, no matter how far away he might be, though it does not tell her the actual distance. When he dies she will know, through the bond, the moment and manner of his death. Many ... believe that Warders' ... fighting ability must also be a product of the bond, ... but the Aes Sedai deny this. There are indications that the Aes Sedai receive other benefits from the bond ..., but their exact nature is a closely held secret.”

Though, it also details this out:

“When he dies she will know, through the bond, the moment and manner of his death. If the Warder lives but his Aes Sedai is killed, the Warder loses the will to live [and] seems to seek death. Attempts to keep [them] alive usually fail.”

I don't see any indications that there wouldn't be all benefit effects added to each side in a “complete” bond, and I see a few reasons why it could be considered the ideal state of affairs between two channelers in union. Basically, each would receive all the benefits, stated and hinted at, but at the cost of one going suicidal if not insane if their other half was killed. Hopefully this is something that will be explored further in the final three volumes.