Technically, yes.
I have swapped a file over to a blade slot before. I had to drill a detent hole in the file to allow it to mate with the lock bar and needed to file off a small portion of the end of the file tang to allow the lock to engage.
I would caution doing it with the blades as the lock face might not engage as strongly. The end of the blade is beveled to allow the lock to engage and not slip and removing some of it to engage the lock doesn't leave a lot of material in a good orientation to mate with the lock face.