I can't imagine how heavy the Cryo2 will be. The cryo as is, is one heck of tank its a good knife for the money but its heavier than most any of my other knives. Well your at it max you should mill off the thumbstuds. The ZT 0550 is a tank also though if you want comparison pics of a 3.5" XM-18 and a ZT 0550 I can post them.
one thing ive noticed about blades that i spent hours polishing.....i become afraid to use them, i dont want to scratch all the hard work!!! i wouldnt be able to use that cryo if spent the time to do that