I like it a lot. It's one of my favorite Kizers...and when you consider these go for around $100, it's an amazing value knife.
http://www.bladehq.com/item--Kizer-Folding-Knife-Green-Titanium--26139
When the Ki423 first came out, I think it was Kizers most "daring" design to date. The Greco key design around the edge along with the scale pattern down the center make for a really unique look. Coupled with the neat, greenish ano finish and the big belly clip point blade, it makes for a very unique knife.
It opens well either by flipper or thumbstud and has a very decent feel in hand. The only upgrades I could wish for would be a steel lock bar insert and torx pivot hardware...but at this price? I'm kind of surprised that Kizer never offered the Ki423 in different colors and finishes. It seems to be a popular blade with anyone who owns one.
Edit: It looks like now this knife has been renamed the Sovereign Ki4423 and they call the design Dragon Thunder Glyph.