I dunno, ive seen a number of people try for dual slaan builds and they havent worked out well
I play in a very magic heavy environment, high elves, chaos, dark elves, skaven and other lizardmen. The book really helps me wear out their...
You can run a lord level saurus warrior for cheaper than chakax. You can run 2 kitted out hero level saurus for around the same price as chakax....
You can use a gw and a shield, but the shield only works vs shooting. You can't take two magic armors though so one of those has to go, probably...
If you drop 2 saurus from each unit you can still manage a 5X6 or 6X5 frontage with your saurus units and squeeze out 48 more points to play with....
The other advantage of Life is miscast protection.