Hueyracer, you don’t have to wonder how it would all work without the crushing weight of EASA busywork. In Canada and other regulatory jurisdictions there are no separate checks for left or right side, no restriction on what side you sit, no restriction of switching PF-PH on final because it is going to work out better that way, from either seat. Flew EMS & Offshore for 30 years like that, question never came up until we encountered Europeans, which adapted without problems. Dual controls, dual instruments, how hard can it be? Sounds to me like some rigid-minded airline background bureaucrats wrote their antiquated and irrelevant notions into your EASA rules. Thread drift, the OP just wants to know how to comply, but then justifying the regs is a weak case.