Funny thing... I posted here, fairly quickly bought a pair of Eclipse rear panniers from a forum member (non-slide-lock), then Colorado Trek seller separated and sold me the rack and slide-lock panniers, then Raleigh got in touch last week, said he'd be in my area and would I still like them. His were the slide-lock fronts, plus the adapters for the blackburn style front rack. So now I have slide lock front and rear set, two rear racks, front adapter, and a second set of rear panniers with standard attachments.

Oh, and the Mt. Whitney that the original Eclipse rack is slated for Fat Franks, and the rear support has a tapered section that may limit my tire/fender clearance. It may go on a different bike now, but I'm excited to have everything!