Couple this with the fact that you should already be concatenating and minifying your assets, and this seems like a no-brainer. I suppose you could argue that

Couple this with the fact that you should already be concatenating and minifying your assets, and this seems like a no-brainer. I suppose you could argue that this approach helps with CDNs, but therein lies another issue of whether or not serving a library from a CDN really buys you anything over just including it with your site's script payload.