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BOTH BTC and gold have done very well over the past few days.
I read that the GOLD MINERS are up 100% (average) so far in 2016. As a speculation, that has been at least as good as Bitcoin in 2016.*
I would suggest (and already do) HODL both. Diversification is a good thing as no one can predict the future.
* That outperformance will likely not last. Gold miners != gold.
I think its a good idea to own both, but that's all, more diversification beyond bitcoin and gold is in my book a waste of money. But if you want to get rich, you can't play safe, you gotta go all in, and the only thing that can make you rich in the following 5 years is Bitcoin. With gold you are not going to get any relevant gains, now Bitcoin marketcap is tiny and can easily make you rich in 5 years if you invest hard now.