Hi,
If the "Author" in question is the owner or operator, or even the "Face" of the brand then - Yes, it is fine as this person most likely wrote this content anyway, or is the "owner" of the content.
I wish i had a source, but I remember this exact question somewhere to Matt Cutts, and he referenced his own website that he does use it, and I believe gave a similar explanation as above.
Also as a note (of course this is not air tight evidence)
But I actually do use it on a homepage on one of my sites, and actually saw a bump a few weeks after it implemented in my "niche" - cause the author only writes about that specific niche (but of course as I said this is only off the cuff evidence, not reviewed)
Shane

