Sure you can do that - select all vault folders, RMB and run the dispatch.
Only note that there is no way to check if file is checked out by anyone. If still need to do that then be prepared to click on lots of errors fired when checking out checked out files or checking in already unlocked files. If it is really needed then you need to get some "Push the freakin button" program to do that for you.
I have no ideas how to get list of all such fails for later review and manual fix.