Why don't more people start Spellthief's on Jhin? (and upgrade it)
The bonus move speed you get from the little minigame is pretty darn good on Jhin, I think.
I tend to buy it pretty frequently. If I'm really feeling froggy, and I find I'm having one of those games where I don't get ahead, and I'm getting more assists than kills, I'll even upgrade it into the eye sightstone thingy, and relegate myself to being a 2nd support that also does a fair bit of damage.
Typically I'll go

Eventually getting

And of course

(or
instead of duskblade if I'm not going lethality) for my core
But I definitely upgrade to frostfang, and as I said I'll even get the full
sometimes if I'm behind enough to only really be getting assists.
Does anyone else do this?