Totally new to CV

[Irish]

First, sorry for the cross-post, but I think it applies to both. 

While I am not a digital guru, I have a pretty good grip on how
DSP/sampler/MIDI stuff works. CV on the other hand is confusing me -
remarkable, because it's very simple. I get it; one volt per octave, OK. 
I am going to have at least one CV synth (a MadMouse, and I'm looking at that
quintisential Fatman) and I have been thinking about how I was going to control
it. I had this notion that a Midi/CV converter would allow me to use a Midi
keyboard/sequencer, but I really don't know how these work, and the pages I've
looked at so far seem to assume you do. Will it work the way I think it will?
Do I want it to? 
So I'm looking at Tom Gs pages more, and find this description on making a CV
controller by *chopping up a working keyboard!* Ahh! Now, it's not the doin'
that bugs me - I got the tools and the skill, it's the need. Do I need to do
this (have a CV controller)? Should I? He used a Miracle piano - I have one of
these, and will sacrifice it to the Analog Synth Cause if it's worth it (even
if I have discovered a drum section in it on channel 8 :) ) Also, while not
really much good for anything but a controller, it IS velocity sensitive; will I
lose that if I convert it? 

Thanks for cluing me in, 
Irish