I received my Keytronic E-series board at work today. Initial impressions are that it has a very unique feel that actually feels quite nice. The differently-weighted keys really causes an interesting effect. Mostly good I would say, except that now, the spacebar feels noticeably heavier than the rest of the keys.
The sound of the keys is also very unique. I haven’t heard a rubber dome keyboard that makes this sound before. Each keypress results in a muted ‘thunk’, which is different form the typical sound of two pieces of plastic coming together.
It’s really too bad that keytronic doesn’t make ergonomic layout keyboards, although supposedly these keys were at one point used for one of the Microsoft Natural Models.