I have had one of these for several months, didn't get it from MassDrop, and I love it. Most places don't picture it with the Thumbstud but I would expect one. Here are some pictures I found with the thumbstud for people wanting to see it.
https://www.mesenzo.com/Maserin-Starlight-Carbon-Fiber
https://www.mesenzo.com/Maserin-Starlight-Carbon-Fiber