All the Alden shoe trees I've seen are made by Rochester. Woodlore is Allen Edmonds. I've seen both brands' split-toe styles at nordstrom rack.
I agree that 9.5d Barrie is about the upper limit of Alden/Rochester M shoe trees. The M trees I have only compress about 1 cm lengthwise in 9.5d Barrie's, barely enough, as others have said, to flatten the creases in the shell.