In inches.
The 526Lod I tried in XL:
Shoulder: 18.750
Chest P2P: 22.250
Body Length: 26.250
Sleeve Length: 26.250
Waist: 19.750
Hem opening: 20
The 526L in an XL I tried, after 2 soaks, each for 1hr @ 30C, then 40C.
Shoulder: 19.625
Chest: 23
Body Length: 27.125
Sleeve length: 26.5
Waist: 20.875
Hem opening: 21.125
Both Jackets are from this most recent batch.
After doing this I would personally say, get the measurements that are closest to your best fitting jacket. It shouldn't be way over. Maybe that is widely known information, but I didn't know that. I assumed if both were from the same batch go with the same size. Measurements clearly matter more. I'm sure results may be widely different so take what I say with a huge grain of salt.