Nice to hear that the uSuppy project is still alive.
But there are some points I do not agree with Dave:
When the lcd module is only mounted using its connector it is not as stiff as when screwed at all 4 edges. The lcd will bend a litte bit at the top, especially when there is no additional protection window in front of the display, so it can be touched and pressed in easily. This looks cheap and allows dirt to get into the case. The other lcd module from newhaved displays with chip on glass will bend even more and eventually break the backlight connections when the unit is dropped.
Using a 2 board construction is better in my opinion: The outer board mainly acts as the front panel and only contains some capacitive keys or some reverse mounted leds. The inner board contains the lcd and the buttons. The buttons have a knop or a longer shaft that goes through the front pcb. The lcd is sandwiched between the two pcbs, giving a very rigid construction.
Is there any benefit of using the sharp memory lcds? The ultra low current consumption is not really neccessary compared to the total consumption of all other parts in the circuit. The last time I have seen those lcds, their contrast was not great and strongly dependent on the viewing and light entrance angle. I would go for a standard 2x16, 1x16 or 2x8 or similar sized graphic lcd. The benefit of a standard lcd is the price and the availability of displays with backlight. A backlit positive mode lcd is readable under all lighting conditions.