like the phrase "don't put all the eggs in one basket. if it falls, everything will break" so in my opinion it is good to buy gold with some of the BTC it has. investment in the digital world is held. and investment in the real world is also held. So investment is balanced
Physical gold is cumbersome in so many respects
First of all, you should understand that if you are buying gold (say, gold coins) on a pretty regular basis, it will quickly become known around, and probably not to the people that you would really want to be aware of your buying habits. So help yourself to guns and ammo as well, and be ready to use them if such a need arises (which it will one day)
Further, apart from knowing where to buy gold (as this is only one side to the equation), you should also know where to sell it without suffering too much a discount (which is a given), and still more so in case of an emergency situation since this is why you are going to buy gold in the first place (as otherwise there are better investment options)
Personally I'd rather have more bitcoin than gold simply due to gold not as liquid
You can look into gold derivatives (aka paper gold) if you don't want the usual hassles of holding physical gold