Advanced routing descriptive URLs to certain pages/posts
So from an SEO perspective, the first URL is actually better, in that it provides even more context for the search engines to digest, index, and understand.

It's also bad from an SEO perspective to have two pages that have the same content.  As long as you include a canonical URL it won't really hurt you, but the only real benefit I see from using your second URL schema is that it's easier to type.  Which isn't really much of a concern these days imo.