1. Is 6 rounds more than 5? Depends on if'n you're using that "new math" or not.
2. Is it better to need the 6th round and not have it than to have it and not need it? It's better to not need ANY rounds.
3. Do six rounds constitute more additional bulk and weight so it would make any difference over 5? A 20% increase is significant.
4. Will having a 6th round in a speed strip hinder the reloading of the revolver in any way? Yes. It's easier to handle a six round speed strip loaded with five rounds.
5. What is the capacity of the speed strip? Depends on which one you buy.
6. Will the Gods of reloading not smile on you if you carry 6 instead of 5? Or will they? I would have to go to hell and ask them but that's not in my travel plans.
7. What to give the 11th bad guy for his trouble? A penny for his thoughts.
8. What's a brain for? If a brain was for anything practical, we wouldn't be in the mess we're in!
And finally:
9. What would Jeff Cooper do? He'd probably tell us not to worry so much.