I'm kind of perplexed as why this is a concern at all. It seems like
the little bit of electricity being used by a lighted switch is
miniscule in comparison to what a light fixture would use.

Would appreciate any insight anybody could provide.

Thank you,
Jim

The aluminum is the problem ... banned up here because the average
person can install incorrect switches etc :-)

http://www.faqs.org/faqs/electrical-...ection-16.html

The main problem with aluminum wiring is a phenomenon known as
"cold creep". When aluminum wiring warms up, it expands. When
it cools down, it contracts. Unlike copper, when aluminum goes
through a number of warm/cool cycles it loses a bit of tightness each
time. To make the problem worse, aluminum oxidises, or corrodes
when in contact with certain types of metal, so the resistance
of the connection goes up. Which causes it to heat up and corrode/
oxidize still more. Eventually the wire may start getting very hot,
melt the insulation or fixture it's attached to, and possibly even
cause a fire.

Read on at the site (or Google a few sites) for appropriate fixtures,
switches etc ...