I believe it doesn't matter where you hang your real estate license, as long as you are able to provide the best service to your clients. People are choosing you because of you, not the company you work for; a NAR stat says that less than 2% of people will choose an agent just because they works with a particular company.
Think about it; if you were working with a buyer while with XYZ Realty and decided to switch brokers to ABC Realty, do you really think that buyer would say, 'Oh, thank you for your help finding homes, but since you are no longer with XYZ Realty, we can't work with you...we have to have an XYZ associate." Not gonna happen!
Overall, as long as you are educated, provide great service and can get the job done, hang your license anywhere you want.