BuyWrite ETN (BWV): A Buy -- If It Can Track The Index [View article]
Barclays thinks so of course but I have not found any commentary from disinterested third parties that feel likewise. I should also note that I haven't found any commentary that says Barclays is wrong either.
The Buy/Write ETN as a Substitute for SPY -- Less Volatility, But Where's the Growth? [View article]
BuyWrite ETN (BWV): A Buy -- If It Can Track The Index [View article]
So basically no help here.