BSN or Specialize?

My friend recently went on an interview and was told by the unit manager that being certified in something is more beneficial than obtaining a BSN. Does anyone have an opinion on this? I'm interested in obtaining my BSN, but it will take a while since I'll be paying out of pocket (absolutely no loans). I am also interested in starting a forensics nursing certificate program next summer. What has been everyone's overall experience in this?
Specialty is great, but what happens when you are specialized and want to move into a totally different specialty?The BSN is more important. A BSN prepares you for entry into just about any clinical area, and allows the ability to move around when desired.
Do both.
Many nationally recognized specialty certifications now require BSN for eligiblility - so it may not be an either/or situation.