Um, yeah.
Right-hand index/middle/ring/pinky homekeys should be JKL;(semicolon) on all qwerty keyboards, first thing they teach in typing.
lol, blank key caps are good for improving speed/accuracy when you know how to type - they force you to break the habit of glancing at the keyboard.
But I would never recommend them for people who are still learning how to type. Looking at the keyboard is a bad habit you should avoid (and will still do anyways, at least a little), true. But I suspect that, overall, it will take less time to become a proficient typist by moving to a blankfaced keyboard after you've "learned" basic stuff like which fingers go to which keys.
You could always "mark" the keys with something tactile. Bit of velcro or something.