A mobile version of SwordSearcher is something I have been considering carefully since Microsoft made "Pocket PCs." I have never been satisfied with the capabilities of these devices as a target for SwordSearcher. Since none of those devices can run SwordSearcher as it is now, any mobile version would be SwordSearcher in name only.
The situation is improving, but anything else I say is mere speculation. I would like to have a mobile version of SwordSearcher myself, so I am always considering and re-considering the options.