I was re-reading a piece by Peter Leithart on the Trinity and sacramental theology when I came across this quote:
Reformed theology has never been able to fit sacramental theology convincingly into its overall system. Even when the importance of the sacraments has been affirmed, it has often taken the form of concession rather than implication: In spite of who God is, and in spite of his sovereign distribution of grace in salvation, and in spite of his normal way of operating, God cdso communicates his presence to his people in signs and seals.
-Peter Leithart, “Framing” Sacramental Theology: Trinity and Symbol, WJT (62) 2000