There are plenty of ergo/split keyboards without numeric pads.

http://www.microsoft.com/hardware/en-us/p/sculpt-ergonomic-d...

https://www.trulyergonomic.com/store/index.php (mech switches too)

https://www.kinesis-ergo.com/shop/freestyle2-for-pc-us/

http://www.goldtouch.com/ergonomic-keyboards/