I don't care for glue sticks, rubbing and dabbing them to get the glue to stick, can stretch/distort the fabric. Also it would be harder to keep it within the seam lines too.
It may also be harder to sew through once it hardens, especially if you get a little clump here and there.
I will say that some here use glue sticks and are happy with the results. I would say to use a fresh one, it will go on easier and keep the distortion to a minimum. Keep them in a zip lock baggy and store in the fridge to keep them soft.
Whether you use bottles of glue or the sticks, a little goes a long way, and be sure and heat set them with a dry iron. :D:D:D