I was loading my recently dried 8x10 negatives into the negative preservers and I was having a little fit. Half of them were backwards. WTF?
Turns out I got a batch of Shanghai 8x10 that had the notch at BOTH CORNERS.

So, yes I not only loaded 3 of the sheets base-side-up, I also processed them in a Jobo 3005 EXPERT drum EMULSION OUT!

The amazing thing is that, other than the images being backward, the negatives are flawless. The exposure is fine and there was complete development of the image!