Just awful! If you compare OneDrive to 21st century solutions such as Dropbox or Box, you will be shocked at how disappointed you will feel.
Unlike the app name implies, a shared drive does not act as a single drive, but simply allows users to download files to their own computers. In that way, it's a lot like the old service Yousendit.
Also, uploading files to OneDrive takes a LONG time, during which time your whole computer will slow to a crawl. In most cases, it would be far faster to drive to Staples, buy a USB key, copy your file onto that, and then drive to the person with whom you want to share your file.
Microsoft's offering in the shared drive space is strictly for Windows users, where I assume it's OS integration makes the solution work more smoothly. However, given that Dropbox and Box already exist, there is absolutely no reason on earth to mess with a product as utterly inferior as OneDrive.