Though I can both lead worship and preach, I used to find it difficult to do both in the same Sunday. While I enjoy both, it can be hard to find a moment to take a breath! The more I do it though, the easier it gets.
More recently, God has been bringing us a lot of new musicians. They are all extremely talented and it's been making it easier for me to focus on preaching. Though if I go too long without leading worship, I do tend to miss it! Whenever helps build God's kingdom, I'm happy to do for His glory!