well, being an underwound c-bomb, the cold sweat has a paf-reminiscent clear sounding scooped midrange, but it's not round sounding by any means, the top is very bright and focused and the upper mid crunch has a very strong ceramic feel
it cleans up really really well for its amount of output, and better than any ceramic humbucker I've ever heard, but it's not an alnico-like smooth sounding pickup
reminds me of Ty Tabor (King's X) and Dimebag Darrell, specially on lead tones and pinch harmonics, which are quite unique
I had a '77 50w JMP 2204 and the sweat sounded quite sharp and bright through that amp
the alnico nailbomb was definitely a much better match for that particular amp
it was a hair hotter, but smoother, thicker and more balanced
had both in a '73 les paul custom, not a PRS, though
the cold sweat sounded amazing in my friends mccarty, but the cutting edge feel was even more pronounced