Grog, some people have no wish or desire to instruct, there are already way to many instructers out there that have no real desire to do it but use their students as a way to build hours...does an instructer who really doesn't want to instruct produce a quality student?
I don't think anyone admits that you will get an IFR job with low hours, however I think the discipline of IFR flying at an early stage increases your flying skills and decision making ability, and at least gives you some skills to get you thru a sticky situation if you do get caught in cloud one day.
If you get it out of the way at an early stage it's available for if/when you get upgraded to twins, and in the mean time you have a few renewals under your belt for half the jobs that require 3-5 as part of getting a job.
It certainly may not help you get a job, but I can't see it as being a bad thing...