A friend recently mentioned to me the danger he perceived of typing
commands instead of text while experimenting with a chordite-style
keyboard. There is indeed room for error. In the early learning days,
it's good before practicing to open a text editor as a sink for the
mistaken characters you generate! Don't do your initial tests at the
command line.

It's not so much the chordite design per se, I think, as it's the fact
that the keys are there in the hand, at the ready. That is, any
conveniently wearable, hand-held keyboard needs some care in use. You
want to lift your fingers a little before sneezing, etc.

In fact I would go so far as to say the relative safety of the
standard qwerty is just the other side of its general inconvenience.

Of course any real hand-held product would need a safety of some sort
so that it doesn't generate characters while in your pocket.