It really depends on what and where you are working. Both can be equally important. I recommend focusing your studies on both. As far as cs, i'm learning,
c++, visual basic, excel vba,
python, and sql to make myself marketable. Just take a look at quant job listings and it'll be a good idea of what is required. Some firms only require
c++/vba while some don't require any programming skills, while others recommend all that I am learning. As far as math goes, some places want Ph.D.s and others are fine with MFEs. It really all depends on where/what you're doing. The more the better rule is always justified because of how competitive this market is.
As per experience, I've worked on a market risk desk where no programming skills were necessary but math was essential. Everything was done in excel spreadsheets. But once you're in algo trading, you need both cs/math. Again depends on where/what you're doing. There are market risk quant jobs where a high degree of math/cs are not required. But those are few and far and extremely competitive.