I had three peers in my entire engineering classes like that. Two became PhDs, one has changed fields and applied himself rapidly.
I wasn't like them, but that ability to understand on a fundamental level, not forget, and then very quickly tackle more and more complex problems so fast was like a superpower. It took me much much longer, without the detailed understanding.
I wear a FreeStyle Libre every day, AMA. It's very good for T1s, of course.
It's reliable enough - the biggest downfall is that it's around 15 minutes behind real-time, ie, what you can measure with blood. Sometimes it can feel 'stuck' too, and change rapidly between a short amount of time.
The second model, which I am waiting to try, includes Bluetooth alerts if a trend high or low is detected. This may make it even more useful.