yup . . . that bow punch works great . . . but because of its limited reach, it works best w/business cards from v/print. i can only do 2 cards at a time w/this punch.
in a pinch . . . a regular hole punch works okay w/postcards . . . but i'm gonna look for the long reach one for larger cards . . . http://www.paperwishes.com/products/7219380000