More ideal for us than them.  Getting caught on open ground vs cavalry isn't an inefficient way to go.  Not to mention that we have the morale advantage!  Mercs just fight for coin, they'll run away if things get too dicey or their nose gets bloodied bad enough.  After all you can't get paid much if you're dead.  Not to mention that our characters hold an important tactical advantage in knowing the internal layout of the temple, something they won't really have time to enjoy as they'll be busy being shot at and torn to shreds.  Hmmm.  If there was spare wood around, making a barricade at the entrance to slow them down and fill them fulla holes would have been great as well.