Cop for ca and cs - both allowed?

Hi friends,

                   Can you please tell me whether a person having COP form ICAI ( Institute of Chartered Accountants of India) can also hold COP from ICSI ( Institute of Company Secretaries of India)?

Please, post your answers with some evidence, so that it will be most helpful for me to know the real status as to whether its worth doing both CA and CS,because I've made up my mind not to go for employment but to only practice...So, I want to know whether its possible for me to function as both practising CA and practising CS?

regds,

shruti