[omgbear]

I have the Kinesis Advantage 360 which is split but has all the non-numpad buttons.

I do spend lots of time in Emacs, but also use it for plenty of gaming. Just remap in-game to ESDF and only use the left hand. (Or set up layers, but I'm generally too lazy for that).

I think the thumb clusters are great, but may not be to your taste. I'm very happy with it, but have used various iterations of kinesis keyboards for a long time now.