Some background would be nice I guess. Charleston Baptists started in 1740 and grew mainly in the US state of South Caroline. Interestingly enough I've spent a fair amount of time in Charleston this summer doing missions and speaking to youth. Characteristically Charleston Baptists have a more liturgical style of worship. They value highly their education programs and believe that discipleship should be the main emphasis of all teaching in the church.
Sandy Creek Baptists, originally called Separate Baptists, started in 1755 were a bit more of a wild bunch. They were very evangelistic in nature and in their congregational methods. In general they were less educated and wealthy that the Charleston Baptists and had a more "extemporaneous" worship style. They emphasized evangelism and church planting over discipleship and education in ministry.
It would honestly say that my church falls somewhere in between. While there are deep Charleston roots it seems that our worship styles feel more Sandy Creek. Regardless of where they come from or which movement we claim for our roots the important thing is that both of these stylistic methods for "church" can point to Christ and draw others to Him.
It can be messy that's for sure... but, it's beautiful.