[CLT40k]

Looks fun, but I don't think Sicarius + Tac Squad (400 points) is worth it to give Tacs the ability to infiltrate. I'd just put those guys in a pod and buy more scouts...

On the whole, I'm not wild about scouts... they're not much more than Vet Gaurdsmen... but I think the list would be fun to play against...

 

[CLT40k]

you don't put much stock in sicarius's abilities beyond the buffed tac squad?

Suprise Attack - Re-roll for sieze initative isn't all that good
Rites of Battle - is cool, but Marines don't run all that often.
Battle Forged Heros - Only for a Tac Sqaud... but cool...

If your intent is to have a kick ass CC Captain, then he's your man.

But, while Cato does some very cool stuff and his stat line is certainly impressive, I just can't justify the extra points in most lists - unless I'm running him just for fun... but normally, I just stick with a basic Libby and leave the CC oriented lists to Spacewolves and Blood Angels.