Were the GRiD laptops, which I remember reading about in Byte Magazine back in the day, waterproof? I believe decades of experience with portable computers suggest that might be a more important feature than being able to stop a bullet. Depending on what kind of company one is keeping.

I've been revisiting it lately, and Byte actually contains a vast collection of things that didn't make it largely because they were ahead of their time. Great stuff.

https://vintageapple.org/byte/