Well, I personally never followed the Braille method, it would have to take some quick brain clocking and width detection between the F# and Eb and so forth so master it, so I sorta went for the "Educated Guesses" method. I can perform "Innocence" (By Burgmuller) sometimes perfectly (hitting the right notes) without looking, that's including the jumps at the end.
I guess I still havn't had much "Keyboard Geography" experience to be waving hands and arms blindfolded to get it right all the time, but I assume it will eventually become extremely accurate. I have tried the Braille method mind, I have to move quite slowly to get it right, I guess with time though, it would work wonders!
On the performance channel I watched Ray Charles in Concert, if memory serves he used the Braille technique, and darn it served him well! ^_^
My suggestion is, based on my limited experience, go with which ever (I assume you could develop both!), but as long as you bag one of the skills, your set to go!