Bleeding it is easy - all you need is a wrench, a piece of hose, and a mayo jar. If the jar is clean you can dump what comes out back in.

Just because the fluid is disappearing doesn't mean the slave is bad - I thought the same years ago and went through the hassle of replacing the slave and it turned out not to solve the problem - my problem is the clutch cylinder - that's what's leaking. I fill up the reservior every morning before I head out (usually just a dribble) as if I forget for a few days it's empty and I have to bleed again.

Of course I have the new one on my workbench for a couple of months now, but now it's too darn cold for me to want to do that job considering all the other, unrelated car things I have to do first.

Replacing both is smart, in my opinion.