The new Actus DB2 does have a detente for the swing now, as well as for all other adjustments. Several other changes have migrated into various versions of this camera including scales on the monorail, a few things moved around etc.
I assume these changes are also in the Actus mini, since the only difference is the block under the front which raises the lens/tilt/swing assembly, and in fact you can remove or add this block to turn a mini into a DB2 and vice versa.
I haven’t had the db2 long, but have enjoyed it. I do wish the focusing adjustment was a little more “fine”, but it still works quite well for my uses, maybe more challenging for the OP’s use which sounds like focus stacking macro work.