Having specialized meters demonstrates professionalism.
BUT ONLY IF YOU ARE PROFICIENT AT USING IT. (If you can explain how to use it, you can be competent).
That is really important and reminds of a story I overheard a Realtor telling his client about an inspector recently who charged top dollar and walked around with his IR and fancy tech instruments. The client asked him what it meant that he was looking at and he couldn’t explain. I can imagine my stomach sinking immediately if I was that client.
Or how stupid (if he had any decency) that inspector felt when he couldn’t explain it. Embarrassing as all hell.