Don't forget there are the 14 ATPL theory exams which must be completed before CPL/IR. While I'm sure the 7 PPL exams are easily achievable alongside university, the ATPL exams require time, determination and effort to complete, especially via a distance learning course, which I am sure would be the only option if you were attending university at the same time.
I am not saying it is impossible and I myself have not attended university, but I have done the ATPL exams and the thought of having to study them alongside a full time further education course doesn't sound like fun to me.