Slide Switch Wiring

[JVG]

Hi folks, I have a question that's probably fairly basic to those of you who are comfortable with electronics.

When wiring an on-on slide to use as a bright switch, is there any difference between (a) wiring the cap across the two sides of the switch in the end position, with the signal in/out leads through the middle position of the switch, and (b) wiring the cap and in/out signal leads onto adjacent lugs on one side of the switch only.

Traditional Jag wiring seems to use method (b), but I've seen posts here about adding bright switches wired like (a).
I notice the Marr jag, with it's two bright switches, has one of each method!

Thanks for helping!

j.