Update !!!!
Ok guys, you've all be super helpful so here's the update (yes, already).
I first decided to go pick up the gear today. Then I stepped out, and was greeted by the worst and most ominous weather : cold, dark, rainy, super windy. Yikes. I'm NOT going to Paris on such a day. So I called the seller, geez photographers can be weird sometimes. The guy has bought the camera two months ago in a brick and mortar, registered it for extended warranty with FUji France and... not shot a single picture with it (WTF) ?!?!
He also bought a 35/1.4 in June, updated the firmware and also NOT used it (re WTF). Guys sounded genuine, if only a little peculiar.
The one of my excellent and close friend (not heard in a long time though, life keeps getting in the way) calls me and we talk at lengths about his FUji cameras (he has them all, X100, Pro, XE). He bought the XE in kit to have the zoom, and has never brought himself to part with the (hardly used) body. Then during the discussion I realize said body is BLACK !! And he needs to sell it !!
So, he's sending me the X100 he has little use for tomorrow. Then I can shoot it for a few days and get an impression of the dreaded FUji AF, lol.
After I decide if the overall Fuji Xperience cuts if for me (it certainly does with my X10), I can ship his X100 back and snatch his XE for a very fair price (he's sold stuff to me before and always at very friendly rates).
I'm happy