I don’t, really. I do use MVC, but for the view, I prefer to use plain PHP rather than some obscure template language to achieve the same thing. I do try to keep it simple though.
Of course, this is much easier for me as I tend to create “templates” just in CSS, if at all. By use of MVC, it is still easy for me to update the HTML, but I have no need to have designers edit it, which might not be the case for larger projects.