In my case, this is actually %100 percent. But percentage of total funds being used on trading doesn`t exactly mean the person is a big risk taker. It has a lot to do with what you are investing in. I personally wouldn`t buy any altcoin that does not have huge volume on the market. So, it is less likely to make huge profit when you are not investing in a brand new altcoin which you think has a great potential in the future. I hope i explained my point clearly.
It's not so much about trading or not than about the exchange pulling a Gox on your ass. If the exchange closes and doesn't let you withdraw your money you're fucked (and yes, it has happened a bunch of times in the past).