I haven't because I've never handled an Alto! Seriously!
I got the slimline fixture this morning. And, yes, it works! It's made by Lithiona, with a 90s Advance (post-kool-koil logo) full-power ballast (1.45a, best kind: full power and no PCBs!) and 1996 Sylvania 60w cool white Supersavers. When it first made it into my house it was in the unheated garage and after running for almost an hour the lamps had brightened some but flickered horribly. Upon bringing it inside, though, it warms right up, although the lamps flicker at first, but then they stop and are decently bright, although I'm sure 75 watters would be brighter yet. Ballast is very quiet, and runs cool. One of the sockets is broken though, so I have the fixture laying upside down right now (Lamps facing the ceiling) with a piece of kindling from the woodstove jammed under it to support it (lamp is just making contact with the spring, it's the plunger side). I need to do something about that...we don't want 775v just sitting there, do we? But otherwise, a cool fixture! It does need a good cleaning (I did what Windex could do but the rest will have to wait till spring). I'll post pics of the fixture, lamps, and ballast shortly! Stay tuned!