GayWinnipeg.ca (third-party website that lists St. Matthew's)
This church belongs to a denomination, the Anglican Church of Canada, that permits but does not require congregations to be affirming. A third-party website, GayWinnipeg.ca, describes the church as affirming.
The church's own policies cannot be found on its own website. However, the church does cite as a discipleship book "Our Lives Matter: A Womanist Queer Theology" by Pamela Lightsey.
Thus, its score is Unclear: Affirming.