Guys, I was taking a shower when this idea sprung to my mind. It must be the case that it's not feasible or that someone has already thought of it, but who knows? Sharing does no harm. Why don't we ask Apple developers to make it possible to use other keyboards (such as Flexy for instance, or any Braille app) as the standard Ios keyboard if and only if Voiceover is on? What I'm thinking of is an exception to Apple's strict policy on not opening Ios to third-party keyboards that could be made for blind people. What do you reckon? In other words, the Ios device would keep having its standard keyboard, but if a visually-impaired user would want to change it and to use say Flexy as it's standard typing mode, he/she could do it provided Voiceover is on.
Hope what I'm saying makes sense.