I would try this web site...
http://www.nancyziemantv.com/sewing-videos....she has done many shows on purse and tote making. She did one series on how to update remade totes and I believe there was one where she installed a purse zipper into a pre-done bag. Also she did three shows on totes similar to the bow tuck and they had zippers. She does not try to encase the zipper in a seam but covers a raw edge seam with ribbon...much easier.