The Zelda SE case is kind of frustrating. It has more space than needed for a the basics (which for me are a usb cable, the joycon bumper things, game carts, and earbuds), but it doesn't have enough additional space for bigger accessories like the AC adapter, the joycon grip, etc. It winds up feeling much bulkier than what is necessary considering what you can actually fit in there. I guess it's nice if you have an extra set of joycons you want to bring or something.
Ordered the Waterfield Pouch to have something slimmer for the aforementioned basics. I guess I might use the Zelda case for travel, just because it isn't flexible, but I don't see myself using it a lot otherwise.