js error if jquery load is deferred

I’ve been toying with loading a bunch of js with the “async” flag to make Google Page Insights happy. I’ve not had too many problems, but I see WPKB has some inline js that breaks if jquery’s not loaded before the inline script runs. Would there be any harm in adding an async tag to your js or including it with the enqueue function so it’s easier to manipulate without hacking the plugin source?