Do I need s&p 500 in both 401k and roth?

I have 100% of my 401k invested in the S&P 500 at my job.
I have a Roth IRA with Charles Schwab should I also invest in the S&P 500 in my Roth ira? Or since I'm 100% in the S&P 500 in my 401 should I utilize my Roth IRA to experiment with other mutual funds and efts? And leave the S&P 500 out of it all together?