No worries.
I have had confirmation from CASA on more than one occasion that the intent behind regulation 61.375 is that doing a Flight Review or Proficiency Check (Inst. Instructor etc. etc.) in a MEA will cover you for SEA.
For a while there many thought that a check ride in the multi would not cover you for a single-engine aeroplane. Obviously as it was in the previous CAR5 set of rules the reverse would not apply.
But to keep on topic with this thread the above does not apply for your average airline pilot. Conducting an IPC (or whatever your nomenclature your organisation utilises) in an aircraft requiring a type rating (a few exceptions..King Air 350, Metro, Dornier 228) as all transport category aircraft would. Will not cover you for a MEA flight review.
Unless company policy applies you are free to do a flight review as required to maintain currency on a MEA/SEA aircraft. If you wanted to fly under the IFR in those class of aircraft your airline cyclic/IPC will not cover you and an IPC in your 'lighty' will be required. A current IPC in a MEA/SEA will cover you for Night VFR as now with Part 61 this is a standing privilege as a holder of an Instrument Rating.