Search in recent threads, but I think Dan (Seagull) is pretty backed up right now. I'm getting the impression that most of the 1-2 person shops are backed up right now to the point of not even answering email very often.

If I were getting a bag right now I'd get kemmer's rig for a single strap bag (full disclosure: I don't like this style and I've never seen one that I thought did better than 2 out of 3 on design, materials, and construction) or the chrome rolltop for a backpack (it has some mistakes but they're the only company that is at least trying to innovate).

Also, you could always skip all of this BS and just get panniers, they will change how you look at riding with cargo I promise.