Gyroscopic Investing

would this be a good choice for stock portion?  I use vti and have no thoughts on changing but this came to my attention and I thought it was kinda interesting.

ELEMENTS Morningstar Wide Moat Focus ETN (WMW)

http://quote.morningstar.com/ETF/f.aspx ... ture=en-us

ETNs have credit Risk
http://www.investopedia.com/articles/bo ... z1W2HVHDUJ