Scott still does spigots but I'm not so sure about Winston with the exception of the Tom Morgan Favorite.
Obviously a lot of boutique builders like Tom Morgan Rodsmiths, McFarland, Livingston, Chris Barclay, Larry Kenny, Mario Wojnicki, Kabuto, Mark Steffen (now Graywolf) among others favor them and all of them either roll their own blanks or are buying custom rolled blanks.
There must be a reason some of the revered rod designers & builders in the world still favor them...
The down side to sleeve over ferrules, (besides they are cheaper and they suck) is most likely you won't ever see a company offer the same rod in a different number of pieces (like Winston did) and if they do, there ain't no way they will have the same action no matter how much smoke they blow up your a$$...