Tokyo Student Guides vs Goodwill Guides?

I am traveling to Japan in May and definitely wanted to inquire about having a Goodwill guide for a day in Tokyo. I recently came across "Tokyo Student Guides" (they have a Facebook group) and was wondering if anyone has any experience with them? My husband and I are both late-20s and I read that the Goodwill guides are mostly retirees. While there's nothing wrong with that, it might be more fun to have a guide closer to our own age. However, I can't seem to find much info on the student guides other than a few mentions.