You've explained this better than most of the longer guides I've seen floating around. There's a clarity here that comes from doing the thing, not just reading about it. I pulled together the steps I actually follow at portalbridges.com, in case it saves anyone time.
This came at a good time for me, and your perspective gave me a few things to reconsider. I like that you left room for different approaches instead of insisting on one right way. Anyone looking to take this further might find https://ville-barentin.fr/wp-content/pgs/uncx_s_three_phase_sei_integration_shows_a_full_stack_multichain_strategy.html a useful next read on the subject.
You've explained this better than most of the longer guides I've seen floating around. There's a clarity here that comes from doing the thing, not just reading about it. I pulled together the steps I actually follow at portalbridges.com, in case it saves anyone time.