I would tend to think that if you’re gluing it, the shape would be somewhat irrelevant. Modern glues like Titebond are so strong, the wood will likely fail before the glue joint. In your application, I can’t imagine you’ll be stressing it that much.
DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.