BTCI/BITA

Anybody here holding BTCI or the new BITA ETFs? They essentially use options to create "dividends" for shareholders at pretty substantial yields. Pretty juicy returns when BTC was in a bull market and still good but decreasing in conjunction with the drop in BTC prices. I'm thinking of taking on some shares, but then thought, how will these do when the price of BTC is rising since they use option strategies such as covered calls? They would probably have to close out their options if BTC goes parabolic, but would still experience the share price appreciation from holding BTC ETFs. Anyone have thoughts?