I'd go all the way and also add dvorak (programmer's) to the mix. But if somebody goes out of the way to buy an ergonomic keyboard, they are probably fiddling around with keymaps, too.
I could never get my head around the numbers. I just have a custom layout where for 1,2,3,9,0 they are without shift, and for 4,5,6,7,8 they are with shift. So for me shift 1 is &, but shift 4 is 4. It actually works really well.
Advantage have Brown/Red Cherry and SmartSet Programming Engine:
Dual-Layer layouts with secondary actions embedded in the “Keypad” layer
US Version: Windows/Mac/PC Switchable (extra keycaps included)
International Versions: Extra Windows keycap included
One-touch, onboard key remapping so you can customize the layout to suit your typing style and preferences
Heavy-duty, on-the-fly macros up to 300 characters long. Choose from 9 playback speeds and add timing delays to ensure proper playback.
Native Dvorak layout which can be customized independently of the default QWERTY layout.
All settings are saved to the keyboard’s 4MB flash memory.
