[Taqwus]

Problem with using gladiators for sieges is that they fix you in location for the duration of the siege, and if any third-party casts a remote summon on the siege, your gladiators will vanish after the battle. Same result if a single scout popping his head out and screaming, "Come get some!".

Haven't played 'em yet, but I've SP'd against them. The heavy infantry's strat-2 makes them quite interesting for a low-magic situation.