I've seen posts on here done both ways, and both, when done correctly were successful.   a search will turn up the results. 

The tape I got from Lowe's works great, it is very pliable and stretchy without being to stretchy.  The tape at Home Depot was neither, I use it for tying, but not grafting. 

Here is one of many to choices. 

http://figs4funforum.websitetoolbox.com/post/grafting-fig-scion-to-rooted-cuttings-6310559?highlight=grafting&pid=1277752420#post1277752420