When MB&F's LM Sequential EVO claimed the Grand Prix d'Horlogerie de Genève's Aiguille d'Or in 2022, it validated what serious collectors already understood: Stephen McDonnell had redefined chronograph capability in a manner both intellectually rigorous and practically transformative. The twin-chronograph architecture, governed by the ingenious Twinverter binary switch, delivered independent timing, split-seconds, cumulative, and lap-timer functions within a single 44 mm case—functionality that made one wonder why conventional chronographs had settled for so little.