Thought it was a DataHand clone at first glance due to the similarity in the company logo. Took a closer look. Then thought it was a cross between a DataHand and a Maltron/Kinesis. At this point, without actually trying one, I would call it a Maltron/Kinesis design geared towards typing with your palms, not wrists, supported, similarly to how a DataHand is intended to be used, i.e. entire weight of hand is supported by the palms while just the fingers perform very minute movements. I would be a bit concerned about forearm support when used away from a workstation equipped with supports such as Ergo-Rest or a chair with arms at the correct height in relation to the desk. Ergomic considerations tend to get thrown out the window when going portable, unfortunately. Additionally, since these are keys in a vertically linear arrangement (Maltron/Kinesis), significantly more movement will be needed than with the key wells of a DataHand. Depending on how well the unit is matched to the user in terms of sizing, moving the hands off of the palm supports and repositioning may be necessary for top row keys, whereas no real movement of the palms off of the palm supports is needed with a correctly configured DataHand. Also, I suspect the palm support is hard plastic and not soft, as is the case with the DataHand. I may try one out just out of curiosity but on close examination, it looks like I would still rather type on my DataHand Pro II or on the Maltron/Kinesis owing to the overall geometry of the placement of keys. It is intriguing in terms of portability and not needing wires once charged. Might be good for short duration portable work when away from my desk and on a laptop as opposed to a desktop PC with a dedicated chair-mounted DataHand or desk-mounted Maltron/Kinesis with Ergo-Rests for arm support. The price is average to low when compared to Kinesis/Maltron and, when they were commercially avaialble, the DataHand. Try to think of it in terms of RSI surgery costs/lost wages vs cost of keyboard intended to help prevent RSI Surgery costs/lost wages. Then it really becomes inexpensive, assuming it does what is advertised in terms of ergonomics. My gut reaction is that this product would be preferable over a regular flat keyboard, but it is certainly debatable if it can compete ergonomically with a Maltron/Kinesis. I will hold off any real judgement until after I try one. Without trying it I think it is safe to assume it would not be competitive ergonomically speaking with the DataHand, but hands down (no pun intended) beats it and the Maltron/Kinesis in terms of portability, particularly for short-term use, which is what would interest me, especially since the built in trackballs would take the place of having to cart along a Mouse-Trak Evolution by ITAC. I would not consider the mouse version of the KeyMouse unless Ergo-Rest or similar were available for forearm support while "mousing." Of note, the mouse version might be very convenient for users that do a lot of switching between keyboard and pointing device. For users that don't, like me, the trackball might make more sense. The above is just my opinion and can be taken with a grain of salt as everyone is structurally different and this product might just be perfect for some users.
