I normally use the worksheets from my post as part of a larger unit on direct quotes, paraphrasing, and summarizing. One of the reasons I do this activity is that beginning academic writing students, including NS and NNS, often get stuck on the idea of just throwing in lots of block quotes into their papers. So, I would often use this by taking samples from papers in previous semesters--say a paragraph that includes a direct quote, and then ask the students to consider other ways that they might integrate that quote into the paragraph (e.g. by using a comma or blended format instead).
From a writing teacher's perspective, using this variety of formats for quote integration makes for a paper that can flow better and seem more academic that would otherwise be the case.