All ergonomic keyboards take some getting used to, but sadly the point of learning a new way to type is lost here because this is less comfortable even than standard keyboards, nevermind the superlative Microsoft Natural Ergonomic Keyboard 4000 (UK)
(which I recommend you buy instead).
This model seems like it is meant to be a halfway house for those scared to go all-in for the 4000. But this keyboard cramps your hands inwards too far (thumbs turned towards your chest), forcing an unnatural posture.
I touch-type quite quickly and the little hill in the centre increases the overall distance and makes it so that I have to perform unnecessary movements - while not supporting your wrists - the 4000 is raised in the centre but the separated keyboard is much more intuitive to use and supportive.
And with more of my palm forced over the keyboard contortions are needed to reach some keys.
The feel of pressing down each key is not satisfying or trustworthy enough - it feels like being stopped short.
The optional stands are at the front of the keyboard rather than the back, but flipping these open only leads to a horizontal level, instead of the keyboard gently sloping down away from you for better wrist alignment.
Even though I never developed any pains (edit - yes, I have now, see below) along the backs of my hands, as I sometimes do with normal keyboards, I just can't recommend this - it may be sculpted but it isn't comfort.
Actually, lot of work looming and went back to this as options were thin. Definite RSI now developing (it's not my sitting posture, it couldn't be improved upon when assessed at work).