Of course we should have "cannot be stomped" on shieldbearers. Of course they are overpriced.Wouldn't say that - for a chaos lord to buy the war dais he gives up on the possibility for enhanced movement (a horse). Dwarves are slow no mather what so for us it is not a choice but merely a way to buff armour and hp without spending our magical allowance.
That being said I am rather jealous of the "Cannot be Stomped" of the dais.
And all of that is just because this is the only way to get +1 HP on our characters and +2Arm without rune limit.