note on spread...

In the Option Model, this morning I wrote
"new spread: 10% SPY Nov 130 Calls and 10% SPY Nov 130 Puts"
Instead of using options, one could have put 10% of one's account value into the ETF SSO (2x SP500 ETF) and simultaneously put 10% of one's account value into the ETF SDS (2x inverse SP500 ETF).