Yup, that works! <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
Also, you can turn into a Cat or a Spider to wander unharmed amongst the Orcs.
Or you can find the well with Wizard's Sight and throw the poison in from 5km away.
Or you can fight your way through the Orc hoards. (<gasp> Really! <img src="/ubbthreads/images/graemlins/eek.gif" alt="" /> )
Or you can sneak through the smuggler's tunnels.
That's the great thing about Divine Divinity! So many options! <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />