You can do it. CoRE supports all capabilities listed in the Docs. Regardless of what capabilities it supports, these are only used to group devices by type. If you are able to select the device you need (regardless of which capability you used to find it) you get access to all standard and custom commands provided by the device, plus all the virtual commands provided by CoRE. If ST adds a new standard command, you would still be able to use it by manually providing the parameters, assuming CoRE is not updated to “know” that new command. But I digress… 
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