Gamers: Y U NO use Lizardmen?

[IntelCoreDuo]

Hello, I am new to kb, and just started playing ap. I love the awesome lizardmen from the demo, and want to use more of them in my army, especially the one that spawns and upgrades worms. (Where can I find it anyways?)

However, I can find no one here that ever seems to incorporate lizardmen into their army, at least not under "tactics" section. Why is this? Are they only available too late in the game? If so, is there any way of getting them earlier?