I can say that in any anchorage that is comfortable to stay in, we launch the skiff.
Admittedly launching a skiff off of any boat deck in rough weather would mean a several hundred pound load swinging. That would be an unsafe situation.
Thats why we carry a SOLAS life raft.
What we did not want, and never will want is a skiff hanging off of the swim step. Thats because we use our boat to fish off of, and we use the swim platform to exit the boat at the dock.
That and in truly rough weather I want my skiff strapped down in it's chocks where I know it's safe.
Years ago I had a skiff break loose that was utilizing some sort of swim step mount. I think it was a weaver, but honestly don't remember. We were in truly crappy weather and then i had to deal with a skiff hanging down into the water. No thanks! My skiff, and all my skiffs since then get tied down using three points of ratchet straps. In rough weather I have other things to worry about besides a skiff.