An MBA is supposed to provide a step change in one’s career. This means that s/he should be able to break into roles/industries that may not be in line with the current work experience.
With more than 10 years of experience - the industry/work profile becomes more prominent than educational qualification and hence a domestic Executive MBA might not provide much delta.
However, if one is aspiring for international roles, an executive MBA from a tier 1 global BSchool might be worth considering. Examining the cohort as well as the career change that people have been able to achieve should be the key research elements while evaluating.
One of the key advantages of an MBA is the access to the alumni community that you might want to use for your further career growth.
If one plans to stay in India - then with 10+ years of experience s/he would already have enough network in relevant companies to tap into for career growth.