I ordered the labeled 109 key version, although I type with the dvorak layout. I have had two typematrix keyboards, one with blank keys and one with QWERTY layout.
With the experience with both versions, I don't care about labeling of regular alphabet keys, but do appreciate labeled numbers and special characters very much. Maybe I'll just scratch out the main letters and leave the rest, not sure yet.
I do not use the central keys on the typematrix very often, only the backspace every now and then. I find the low central keys to be a stretch for the index finger, remapping the return key to the right thumb turned out to be very practical for programming. I might have the right space bar mapped to a return on TE and leave the left one as a space.
hope they get production running soon...