The Stockholm is ferocious, lot of agression, mids and good bite. They get a bit more hum than from a humbucker.
The Crawler would be a more vintage oriënted, mellower sounding humbucker, which cleans and splits wonderful. You get a huge tone, big mids, thick solonotes (also higher upon the neck) and a unique growl. Yes, Crawlers have a rounder topend, but still good bite (but never annoying bright topend).
I have a Crawler in a swampashstrat and that's my pickup for all purposes (together with two Irish Tours).
I would pair a Crawler with a Piledriver- or a Boss-neck.