I've been offered Contracting Officer's Technical Representative certification - should I pursue it?

My branch chief approached me today and wants me to become COTR (Contracting Officer's Technical Representative) certified. This would be in addition to my regular duties. I'm a web developer for my agency, and they want someone with some technical expertise. I've previously expressed a desire to advance beyond a code monkey which I am now and this is my opportunity. I'm trying to weigh the pros and cons and looking for advice on this. I would appreciate any insight anyone may have. Thank you in advance.