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Yes I have tried three different shimano calipers now:
old xtr one -> https://www.lfgss.com/comments/11998764/. worked fine until seals started leaking (it is a old caliper, bought used)
flatmount br-r505 works really well best performing brake until now.
and I recently tried a br-m595 for the front:
a pretty bog-standard shimano caliper. It works but needs some maintenance (disc is howling...)
yes on some calipers...
a banjo fitting: