It will take a few days at least to get accustomed to using an ergonomic keyboard. Once you do though, you'll never want to go back and your wrists and elbows will thank you for it. Having gone "ergo" years ago, I won't work for any real length of time on anything else. I only wish there was a larger selection of (reasonably priced) ergo's on the market; none of the ones I've tried have had everything I want, mainly good keystroke feel, but the MS keyboards come the closest for me.
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