"I'd love to help!" He nods to Ianto. "Might as well put our clever minds to use somehow. And who knows?" A faint grin crosses his face. "It might even keep us out of trouble. Well... depends on what we find. Especially given unknown alien tech..." he trails off, looking distant.
He glances at his double, frowning, forehead wrinkling. "Especially-especially if there's alien tech lying about that helps grow a TARDIS. If you found that in your universe, who knows what could be here."