I have frozen corn in foodsaver bags. It works fine, and I think the corn stays good longer than in ziploc bags (I usually get enough over the summer to last us most of the winter). I have found that, no matter how careful I am to make sure the kernels are dry, or freeze them spread out on a cookie sheet first, they do tend to all stick together in a big clump when they are vac-packed. I try to freeze in single-use size bags, so that won't be an issue. If I need less than what is in a single bag, I find a good whack on the counter or floor will loosen up the clump (and let out some frustration in the process) .
It doesn't matter what you think, just that you do.