I can't speak for any issues (are you thinking in terms of SEO?) except for the fact that it would be better if you drop the "www." in your marketing as well. It distracts.
Yes, can drop www ie. straight to domain.com on a mobile device to access the mobile web app. Just that I can't seem to find any mobile web app or site that uses domain.com as it's homepage. Its normally a m., .mobi, or .com/sub-directory.
So wondering whether I am missing something if I don't follow the norms and just use domain.com for my mobile site exclusively.
So wondering whether I am missing something if I don't follow the norms and just use domain.com for my mobile site exclusively.