As long as you understand what the GCIH is, and what it is not, and you are still interested then it's probably worthwhile to pick up. I always thought the "incident handler" title was a bit misleading as it implies there is a heavy forensic/IR component to the course. The course is actually more on showing you the attacker side of the equation with some lighter details on prevention and response. (no dc3dd vs dcfldd discussion here) It would probably fit the need of moving a forensicator into the security mindset as it at least attempts to make the connection between the attack/prevent/respond aspects of the work. In short, it isn't deep enough in security to make you a l33t h@x0r, but it'll give you enough to understand what goes on in that world. It won't add much to your existing forensic skill set, but it'll give you more of an insight into how forensics is related to, but not the same as, incident response.
CISSP, CISM, CISA, GCIH, GREM, CEH, HMFIC, KTHXBIROFLCOPTER