Using a 2handed weapon per the rules I can take one hand off it, can I use that free hand for the material component and after using it put my hands back on the weapon so I wouldn't require eschew material components?
As removing/replacing a hand on a two-handed weapon is a free action, and so is retrieving a component from a spell component pouch, I don't think you'll have any problems here. Maybe with foci (which
don't fit in the pouch), but do any Duskblade spells even require foci? Not that eschew materials helps you there anyway...