It works flawlessly in my tests with a Nexus 5 and HP Chromebook 14. There may be some bugs crawling around with some device configurations, however. If you run into any issues, head to the Chrome help page for support, where you may be able to have a Hangouts chat with a Google device expert.
Interestingly, enough even though you supposedly need to have your phone unlocked for this to work, I was able to sign on to my Chromebook using Smart Lock with my phone in standby. It could be just one of those inconsistencies that pops up with a new feature, so your experience may differ.
This type of security setting is far more convenient than a password and it's great to see Google working to make password management as painless as possible. Smart Lock's also another step towards tying Chrome and Android closer together, along with all those new Android apps that run on Chrome.
Google just keeps on giving Android users more reasons to consider jumping on the red-hot Chromebook bandwagon.
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