Have got an IMC, used it 2!!!
I kept myself current with a few approaches each month. I enjoyed my training, enjoyed the qualification even more!
From a PPL holders point of view it'll sharpen your flying, and you will wonder how you flew before you did the course! It will all start coming together after a few hours (Fly it, Point it and Talk it!)
Going through IR training now, the IMC rating has helped as i've had the practice at cockpit workload/chart prep! Also, like mentioned above, the instruments used by a IMC rating do require a bit more thought! i.e DI-HSI, RBI-RMI..
One question - Why do you need to do such aggressive unusual attitudes (UP's)? Seems like its the examiners play time 2 me!
NDB