I have a broken set that you can have, or at least I think I do. Some moron installed a givi top case on my bike and spaced going back and applying loctite on the givi support bolts after fitting everything and well, don't do that.
I think they could probably be repaired to handle a tail bag. I'll dig them out this weekend and snap a pic of the damage if your interested.
Heck yeah that'd be awesome.
RSL, I have a bag on my seat right now, but due to the short length it prevents rearward movement in the saddle. Explains why the rear rack is positioned so far back.
That looks like the Nelson Rigg tail pack you had. Is it the "sport" version? CL1060S?