While not my intention I am actually hedged at the moment, long IWM with the robot, short SPY with another system.
Usually when there is such a conflicting situation, one system will get stopped out in short order while the other continues on.

@Pierre and Nickola : What you say makes sense. Great if you can make it work. I can say it's not for me tough.
It requires great skill and experience to time these short term hedges ... as well as intraday following.