Not having the ability to utilize the 64bit versions of Pro and Reader is enraging and short sighted. People who develop PDFs need the ability to test them in Reader as the vast majority of users install Reader. There are also use cases where it is impractical to be consistently signed in, which then means you can no longer utilize PDFs at all. This is dumb and how it did not occur to your product team boggles the imagination. Please either restore the ability to use both products on the same machine, or at the very least allow access to open and use a pdf even if not signed in to your creative cloud account.