I have seen quite a few posts from hand quilters who spray baste. If you are not sure, make up a small sandwich and test it. The brand of spray may make a difference; personally, I would use only 505.
Sharon Schamber has a Youtube video on how to use Elmer's washable school glue to glue-baste bindings. Here is a link to the 1st part of her 3-part series on binding:
http://www.youtube.com/watch?v=4PE0Yq9iGlc
As a customer, I certainly would not object to glue basting for the binding as long as it was done well. This means using small dots of glue a la Sharon Schamber -- not big globs that bleed through the fabric. Elmer's washable glue comes out in the wash and anyway, if used properly, does not stiffen the binding unduly.