I haven't ridden a horse for 20 years...

BUT... if you have something that works on the bike - don't mess with it.

Liking DogMama I am right dominant, but always unclip with the left -

Of course what that means is when it is time to start my right foot is ready to "take the lead", so to speak.

When starting I always clip the right foot in first.

Like what alot of these posts say - if what you're doing works for you, dont mess with it.