It used to be that seasonic/cooler master PSUs could reliably be sold without the dumb 10+18 split style motherboard cable, but it looks like those ones are following that trend as well.
I do my own sleeving and once was enough for splitting sleeved wires across two separate connectors.
Anyone know of any psu manufactures that sell in the 850w ish range that go from 24 to 24pin?