I've done less than a half dozen four day trips and probably only a dozen or so three day trips in the last 5 years. And I've bid those on purpose. Usually only fly locals, split duties, and the occasional 2 day. Pretty typical that I only take the overnight bag out once every two to three months. Mid level seniority (as in close to 50 percent) at OO in SLC.
That same level of seniority in MSP might mean nothing but four day trips. It really varies by domicile.