I've been looking for months, hadn't seen any until yesterday. Then I saw two as well. One (looked to be a black Latitude) on 205N by the Portland airport, one coming down through Forest Park on Cornell. It was too dark out to see the color of the second one, but looked like a Limited that already had silver cross bars on the roof.
On a somewhat related note, since this all happened in the same day, I got my first Jeep Wave from a lady in a mid 2000's GC. Completely caught me off guard.