Its a yes from me!!
Always better as a finishing product, however straight glue is never good though.
Clear school glue is probly the best + comes off your hands easily. By itself it will leave cobweb looking strands in your hair. The white one will just make a mess and floppy hair. Sux : P
I used to go to school with a girl who would use elmers glue. I've used hair glue and basically stripped and ruined my hair doing so. I tried elmers glue once...had second thoughts, washed it out, and styled it as normal. Plus $2 worth of hairspray goes a long, long, long way.
My hair is so thick I won't touch glue in terms of a main product to get it up. The heavier product on your hair, the more likely it is to weigh it down, unless you are using it as a finishing product and not dousing your whole head in it. I swear by hairspray and for good reason, haha. Glue is good for little touch ups and finishing steps (much like how I use knox to seal my hair) but you have to have it completely dry. Completely. Otherwise it's more prone to pull apart and look shitty.