I will say I did not take good care of keeping the lime deposits back, really at all, ever. It lasted about 10 years with zero maintenance on my part. I will have to do better with cleaning and maintaining in the future!Welcome aboard!!
Regarding your EJ, I have an EJ DE 89 myself. One of my first razors, along with a Merkur 23C. The EJ is beginning to lose some of the finish on the cap, and there is no issues with the Merkur. Seems (IMHO) the Germans do a better job, than the English, in the razor category.