I didn't see any way to type function keys (f1, etc...). I see some of the allure of minimalist keyboards but when I imagine myself using it it seems painful.
There are layers and double/quick/long tap keys that can let you add these keys to the layers.
To use keyboard shortcuts though you need to put a lot of thought into the layout and what shortcuts you use.
The payoff is better ergonomics. No bent wrists (if you type that way) and open chest when typing and less slouching. It opens up a multitude of options e.g. mount the keyboard halves to the sides or arms of your desk chair and code on your loungeroom TV or supine computing.
The downsides is the time spend configuring a layout and learning it.