I don't know.
I passed my IMC this time last year, and have been in it 3 times since. Once with an instructor, and twice this winter when desperate to see some sun
. Both of the latter occasions were in pretty benign conditions: 7/8 clouds 2-5k ft, no turbulance.
To help currency, I practice it probably monthly on Microsoft FS, and certainly had no issues during the 3 real occasions last year. The time with the instructor, I flew a pretty good NDB/DME let down with the cloud base at 1000'. I'm pretty sure I could have done it on my own.
The problem is - was it worth it? I guess a qualified YES is the answer. The major benefit for me is that the accuracy of my flying has improved 100%.
However, unless you are looking to do regular IMC flying, you just don't get the opportunity to do so. Most of my flying is joy riding with friends and family in VMC.
Therein the dilemma - unless you keep current, it is more of a danger than a blessing. And if you are normally a VMC flyer, what is the incentive to keep current?