Removal of a few outlet covers is not invasive. Just like opening electrical panel. As far as tracking down exactly where aluminum wire runs, that would require removal of all and the fixtures. We don’t do technically exaustive inspection. Would be cost prohibitive.
Andrew, That is my stance and I am just looking to see if others feel and do the same. I ask because it comes up often and usually I get the same response “Can you tell me which outlets/switches have aluminum so I can either tell the homeowner to correct them or have my lawyer put it in the contract”.