It is pretty much your standard covered call fund. Sub-optimal risk adjusted returns when we look to the benchmark index (S&P 500) and lower returns overall due to the portfolio being concentrated and utilizing a covered call options strategy on some of its holdings.
It has lagged the S&P 500 by about 2.5% annually since its inception and if it is in a taxable account we have tax-drag because of the higher distributions eroding returns even further. When we look to the 5 year tax-cost ratio of the fund, it is more than triple SPY (The S&P 500 ETF). If it is in a tax-sheltered fund this obviously isn't an issue but overall, I fail to see a reason to hold this over a broader ETF unless you are solely looking for higher dividend income. And at that point, you just need to understand what you're giving up overall in terms of total returns.