How can those two labels even go together?! They both come packed with history, depending on your experience with either. As a church we tend to be both - as we pursue what it means to be biblical Christians - we see the doctrines of grace as the defining way God relates to his people in Scripture and we recognize the power he has given the church by the Holy Spirit, something that continues today. We won't always get things right, but we will pursue Christ as he calls us to, together.
Here is a great reflection on the evangelical world's need for more relationships between Calvinists and Charismatics. Give it a gander.
Read it on the Gospel Coalition blog.