NEW YORK ( ETF Expert) -- Long-time readers and listeners know that I am an active manager of passive index ETFs. I favor exchange-traded index vehicles because the diversification comes with low expenses, exceptional tax-efficiency and intraday liquidity.The media have regularly inquired why I rarely endorse the use of active ETFs. For one thing, these funds involve more frequent trading, creating a likelihood of adverse tax consequences for the shareholder. There are fewer tax concerns in an index fund that rebalances only quarterly or annually. What's more, indexes do not tend to change much, making it easy to understand what one owns. An active ETF that you bought five months ago may not share much in common with the one that your portfolio holds today. Perhaps most important, indexing (via index ETFs) often outperforms stock picking (via active ETFs) because of dramatically lower internal expenses. Nevertheless, there are always exceptions to a general rule. And right now, the Cambria Shareholder Yield ETF ( SYLD) is on my radar screen. Here are three reasons that I may embrace the recently released Cambria Shareholder Yield ETF: 1. Reasonable Expense Ratio. According to WSJ.com, the average ETF expense ratio is 0.44%. Of course, there are many Vanguard ETFs with annual expenses closer to 0.15% and 0.2%, but it won't always be possible to get the fund that you want that cheaply. Still, when you buy an index ETF, you will not be paying 1.4% for the privilege of owning a typical mutual fund -- a privilege that may carry early redemption penalties or a loaded commission or costly year-end capital gains distributions. When you look at the active ETF landscape, unfortunately, many are more expensive than mutual funds are. Expense ratios north of 1.4% in the active ETF world are not uncommon. Even the Cambria Global Tactical Fund ( GTAA) publishes an annual fee of 1.41%. Yet the Cambria Shareholder Yield ETF offers reasonable annual expenses of 0.6%. 2. Dividends Are Wonderful, but Debt Reduction and Share Buybacks Are Spectacular, Too. Research that goes back a century often demonstrates the enormous contributions of dividends on a portfolio's total return. Some studies maintain that as much as half of a stock's total return comes from dividends over time. Until recently, though, the impact of reducing debt and/or reducing the number of shares outstanding has received less attention.