Yes, have done those as well, for a Morse key.
Your point about tactile feedback is true. For either technology, tactile feedback could be provided by whatever one chooses for mechanical stops.
That said, distilled water, (rain) is almost nonconductive; maybe waterproofing is not really necessary.
Use a Mercury paddle at home QTH, and really appreciate its tactile feedback.
Here’s the earlier article about the iambic touch-paddle:
scroll down to page 8