If the passenger is a 4-11 / 101 lb athlete I'd take her, and I have an 05 with banana seat. Other wise I don't really think the bike is good for a passenger. I also have a VFR and my wife doesn't like to ride it for long. I guess I spoiled her when I had my GL1800 lazy-boy-for-2. I got rid of it and got a ST1300 with trunk/backrest, that was o.k. (for her but still toooo heavy for me so its gone).
Seriously, I wouldn't like to ride on back for long any bike without a backrest. If you and your passenger are young (early 20's) and in good shape you could probably do it, just stop and stretch alot.