Does anyone have any experience with 3-rail locos from REE?
I could only find one reference to them on the site. This 17 april post from Jvuye.

I just got my first REE loco, à CC7121. Stunning accurate and exquisite détails. Just describing all the functionalities would take a new post. I love the slow articulated directional pantographs. The cabs are hyperdetailed. Very powerful: pulls my Train Bleu set (12 CIWL coaches) with easy. Originally wouldn't pass on R1, but all it needed was regauging the wheels to 13.8 mm from the original 14.2 mm.
A dream now, albeit à délicate one. I wouldn't risk buying à REE steam loco though: I do run my trains intensely !!!

I am particularly interested in REE steamers, so I wonder what Jvuye's reservations about them were. Too fragile perhaps?
Jabez