I would strongly recommend anyone inclined to do an IMCR, now IR(R). I hold an IR completed painfully under the old rules. Those who point out that currency is king are also dead right, It is one of the most frustrating things but I learned precisely nothing of use on my IR course that I didn't already know from using IMCR regularly.
The real irony was that I often flew IFR from my base at Kemble to take an IR lesson at Cranfield!