[(E)]

Would the drive be larger than a regular Anti-matter plasma torch? Presumably there would be a large power requirement, but maybe the power requirement is limited to when the drive is starting up. After that the reaction would generate some reclaimable energy. The minimum distance required between the matter/antimatter reaction and the wormhole would determine how volatile the machinery was.

Then the are a whole pile of weapon based applications for the same tech, what happens if you fire a beam weapon through a visser wormhole?