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Nope I haven't but DC Rainmaker has
Here's his review;
A couple of things to note though
1) I think it cost about twice as much as a Garmin 110
2) They aren't sold as watches, as such. If you want to use it as a watch you will have to buy the optional watch strap accessory
It looks nice though!
My advice with any new GPS watch, would be to wait until it has been on the market for a year before buying it.
When a new model goes wrong, it sometimes goes wrong spectacularly.