I think your last comment answer my question , if it has problem deal with tide it be US against a .5 to 1 mts swell , probably ok for rivers but last time we needed to go ashore in say a river was some years back“how would it perform in them conditions?” From my experience, it would behave much like your Honda 2.5 (or my old Suzuki 2.5) in similar conditions. The only additional issue would be the impact the extra power needed to cope with wind and waves would have on battery consumption. As previously stated, if you up the power, then the battery gets used up quicker. No problem on short distances but might be an issue on longer trips. I treat the Torqeedo like I would a small petrol outboard and always try to go with the tide rather than against it. Quicker and more efficient. It will never compete with a 5 or 8hp petrol engine and is not designed to do so.
Some how I think trying to get back to the boat which 1/4 miles off shore in any swell isn't going to work , shame .
I did have a long conversation with a liveaboard over the winter who had one and had it for sale , his option was for the type of work we need we better off sticking to petrol , which is why he was selling his , shame we was thinking of buying one