Yes, and I agree it would have to be either/or, not both. Setting aside the question of whether the RAN could find sufficient submariners for a sensible cadre in both a USN boat and a RN boat, the difference in approach of the USN and the RN to producing SQEP as MEO, XO and CO was mentioned somewhere above. I think they are possibly mutually exclusive.
Are there any RN submarine exchange posts with a US SSN billet?
N