Well, a year and a half ago Aaron Wessman did just that. He now isnot only a Glenmary Missionary but also a Seminarian at St. Meinrad School of Theology and has begun to share his reflections on his seminary time and his missionary work in a blog.
You can find it here:
Cognition of a Roman Catholic Missioner
I think if you want an interesting and refreshing look at what goes on in a semianry through the eyes of a Missionary seminarian you should be reading this blog. I have added it to my sidebar.