I have aluminum and carbon road bikes with same (endurance) geometry, fit and level (Ultegra). Starting my training plan in late September, finishing early April (28 weeks). Doing one weekly workout outdoor and the rest on indoor trainer (Elite Direto). Maybe squeeze one non structured joy/epic ride per week when time allows.
Just curious, which bike would you put on a trainer?
Aluminum on a trainer and “nice” bike for the road? Or nice bike on a trainer and dedicate aluminum bike as “winter” bike?
Southeast Europe, we don’t have harsh winters, and if it’s wet I just do everything indoor anyway.