I tend to agree with the "right now" emphasis. The "eternal life" in John (as in most Gnostic writings) is clearly not a future reward:
anyone who hears my word and believes him who sent me has eternal life, and does not come under judgment, but has passed from death to life.
Those who eat my flesh and drink my blood have eternal life
Martha said to him, "I know that he will rise again in the resurrection on the last day."
Jesus said to her, "I am the resurrection and the life. Those who believe in me, even though they die, will live, and everyone who lives and believes in me will never die."
I write these things to you who believe in the name of the Son of God, so that you may know that you have eternal life.
Another related thing I loved in GJohn when I left the JWs is the freedom connected to this "life" (8:31f). I may be wrong, but I felt that in the previous verse of chapter 10:
I am the gate. Whoever enters by me will be saved, and will come in and go out and find pasture.
In this "come in and go out", I hear something quite different from the usual "salvation in the Church"...