Technically that's not permissible, because port is adulterated (with brandy or grain alcohol) and thus not proper matter for consecration.
I don't think that is really one of the 2,242 reasons we left the Episcopal Church, but . . . .
Thanks for that.
We left the Episcopal church as well, parking in a non-denominational right now. I do miss communion every week versus the quarterly grape juice communion at the ND church- there was something about reaffirming your faith every week.