Perfect binding short grain paper?

[Tradidi]

I am currently perfect binding long grain A4 copy paper and trimming it down on 3 sides to A5 size. But what if I printed 2-up and trimmed a few mm off the sides, instead of 40-50 mm? It would mean reducing the wastage and almost halving the cost of the paper, but I would end up with binding the short grain end of the paper. I understand that this is not ideal, but could I get away with it? Perhaps PUR/short grain would still be stronger than EVA/long grain?

Has anyone done this? Any other things I need to be aware off?

 

[pippip]

If you bind against the grain the book will suffer waves and the pages won't flow well.

This video shows what I would call an extreme version.

https://www.tiktok.com/video/7317391120701459719