I mean, as a midlaner, I check there runes out because i like to know what i'm up against. Do the have any magic resist, No, well then i can poke and poke harder. Are they loading up on ability power, Yes, Then i'm gonna play a little more passive. Do they have a random rune page with no focus on anything, Yes, then i'm gonna assume you don't know what your doing.
Also, i like to check out there past match history. Are they on a losing streak, might they be on tilt, have they even played that champion before. If so, how good are they, do they farm well, there itemization, past lane matchups.
If you're givin access to these thing, you should use them. Even the little-ist of insight on your opponent will benifit you. Why not, if you don't think they'll help, at least you know that even if there underfarmed, that bandit mastery is the reason why they can afford there items.