That depends. Is investing with a mindset to "just break even with my costs" considered investing for cash flow or investing for appreciation? Although I fully expect appreciation, if it doesn't appreciate a cent I'm still comfortable knowing the mortgage got paid off by somebody else over 30 years. This is a great luxury mindset to have by the way in a market as high cost as Seattle is presently.
I sort of look at it like this (and I've read all of the "invest for cash flow books" guidance as welll), I have extra investment cash AFTER accounting for all of my retirement investments, etc. I wish to diversify beyond the stock/bond markets. So what do I do with my excess cash? I prefer to put it in real estate and more specifically, in a market like Puget Sound where I have knowledge and experience.
I've never really known how to classify RE investors like me, but as I talk to peers, I'm finding it more common than I originally imagined.