It took a few weeks to get used to, but now that I've got the muscle memory down it's a blast to use. Having function layers makes so much sense once you get used to them. Why use Control + C and Control + V and the hand cortortion it causes on a daily basis when you can hold down the G letter key and then press j/k to copy/paste. The thumb cluster is quite handy as well, I have one button mapped to a custom script that I run dozens of times a day.

The designers were extra mindful of different thumb lengths, making it so that you can usually find a configuration that will feel natural and not cramp up your joints: https://dygma.com/blogs/product-development/how-we-developed...