Ok, so now I'm not sure if the original question posted is refering to inspecting another avatar, or, your own avatar. My reply is about inspecting ANOTHER avatar's attachments. Usually this is done to see the creator of an object or outfit that you admire or are curious about, and might like to go buy yourself. I fail to see any reason to inspect yourself, since you know, or can easily know, what you are wearing, and where it came from -unless you are a noob I guess. Hope this clears that up.
PS: I love the worn tabs in some alternate viewers and hope LL adds that feature, as I much prefer the convenience of it over having to search "(WORN)" in my inventory-- which is huge. Cheers...