Hi also use paper bags to cover my whip and tongue grafts, Ray.
Recently, I've been using micro perforated bread bags (i cover the bag in aluminium foil for the first 2 weeks so it doesn't get soaked with the rain) and, sometimes, I even reuse the old padded envelopes i receive, to that effect (only for the most precious varieties - they assure me the success of the graft, no matter what).
Nevertheless, i still wrap the scion in parafilm, so it stays protected a bit longer (specially from the cold when i do the grafts early in the season and to help the transition when the bag is opened).
