The audience can tell when you're being genuine or not, so unless you're Anne Hathaway and can get away with playing a role of something you're not, I recommend scripting and storyboarding in a way that feels natural to the brand and/or the creator.
Stories can be told without a voice leading the way. And even if it's a bit more difficult, it can also be done even without text. Because what you're selling, yes selling, is not the story itself, but the feeling it evokes.
Whether it's a funny story or the process of creating something great, storytelling is the backbone of basically any piece of content you create. So we can connect.
I also have experience in animation and motion graphics, and of course storytelling is part of the process.