I am still working my was through my first messenger bag project. Veg tanned, 6-7 oz front and back, 5-6 oz square edged gusset, stitches turned out, square gusset, 277 bonded polyester thread. Last night I was practicing stitching the front/back corner to the gusset to get a feel for that part of the project. My scraps were not glued - I had premarked/premade holes (stitch marking wheel 7 spi, awl). It went really well allowing me to line up the pieces as I went. Prior to that experience, I had planned on gluing the edges together first, but had always dreaded the prospect of wrestling the edges together at that point. Now I am considering foregoing the contact cement and just stitching them together as I go. So....do I need to glue (contact cement) the gusset to the front and back or is stitching alone okay. I would love any opinions, especially from some folks that seem to make a lot of bags for motorcycles, etc that get pretty heavy use! Thanks, Daniel