Earnshaw, I currently have original CZ rubber grips on both my C100 and T120. Love 'em both. I had the Hogue wrap-arounds on my T120, but the CZ rubber grips are much better. The pistols both feel so much more "perfect" in my hands with them.
I found both pairs used (but like new) here on the forum in the "for sale" thread. I'm sure you will find some if you keep looking and have some patience. I got mine for much lower than new (including shipping). Both pair were off CZs that has less than a couple hundred rounds use through them.
The grips for the T120 fit no problems. Pretty much straight on. The grips for the C100 I had to widen the screw hole just a touch. Took about 15-20 minutes with a cordless drill and bit.