Bought an M-Part Ax3D rear rack. It's supposed to be for disks, but has a QR skewer for fitting direct to the dropouts, using the QR to support the pannier rack. The extra clearance isn't really an issue as it will protect the rear mech on my CX bike. The bags might be a little wide, but I'm not using big bags (Ortlieb front rollers). The stay fittings will be attached to a seat post bracket I've already bodged.
The plan is to try bike packing with this rack rather than a p-clipped rack on my CX bike, as that just didn't handle a lot of weight as the rack would swing from side to side over rough terrain, leading to interesting handling (bike went left, you steered right and then oscillated.
It arrived in a massive box (so no hiding). I said to MrsF I'll give this a go for bike packing rather than a new bike. She said what's the difference, and I said my other bikes don't have any fittings for racks. The 90's MTB does, and would make a great world tour bike, but I use that for work and I am not riding it on tarmac, or mixed surfaces all day as it's much slower than a CX/gravel bike.
She than started asking what a new bike would do, and I said it would have proper fittings for racks, so I could have panniers and fork bags, as well as top tube bolt on bag etc. I'll see how this rack works first as it won't take long to fit. Seems rather sturdy.
It's actually identical to a Blackburn Expedition EX1