Ruthla - interesting idea. I have to say that Henry is more attached to lovey-type items than he was as a baby. The kid never wanted anything but me and the boobs. I tried everything, thinking that he would feel more secure if he had a lovey at night (he crib slept, due to some illness issues and also because he sleep much better in his crib than in our room). However, no matter what I did (wore the lovey in my shirt all day so it smelled like me, held it close to his face when he was nursing, played with him with it all the time), he completely and utterly ignored it. I finally wised up and quit trying
Ben, OTOH, is already a big lovey-dovey man. He loves his little stuffies and his blankies and has since he was about 3 months old. Interestingly enough, I'm even more AP with Ben since I'm more educated (and less afraid of rolling over on a baby in the night!). We cosleep, I nurse him to sleep (I didn't do that much with Henry, I would rock him instead) and I sling him (I didn't know about slings with Henry, and when I tried a ring sling with him at 6 months, I thought his crying meant he hated it).
So, IME, my more APed baby likes loveys more than my less AP-ed baby. However, now that Henry is a more AP-ed preschooler, he will sleep with a teddy bear, but he certainly doesn't have any kind of attachment to any kind of lovey.