The reason I like direct touch normal keyboard is it requires very little phone juggling. It's very quick to do. It also isn't full screen so I can still kind of explore the visible parts of the screen above the keyboard. I'd also say it's really quick to type with two thumbs but I suppose that's more familiarity than anything else. You can probably be pretty quick with BsI too especially with contracted braille input. I forgot a lot of my English contracted braille though so I'd have to relearn that. I only ever really read German contracted braille. Which obviously won't work well for typing in English