Two different twos
You may use different two-card combinations for high and low. That is not permission to play trash. You still need quality ends.
A2xx with backup still preferred. Rough low-only junk still gets quartered.
Different twos for high/low allowed — still need quality ends.
'Two different twos' (limit Omaha 8, G0): Make 'Two different twos' change one limit Omaha 8 decision.