I'm willing to believe that this was a well-grown specimen, but I still wasn't particularly impressed.
It's the first time I've had a Sarcochilus on the blog, so it's got that going for it, I guess. There are some additional photos of the cross (though not the same specimen) in a thread at orchidboard.com. One of the commenters there says that he finds Sarcochilus difficult to grow, though I have no idea if that's a typical experience.
The orchid registry has a Tolumnia Louise Elmore, but no Sarcochilus Louise Elmore, so I can't tell you where that cross comes from. Sarcochilus Melba, on the other hand, is Sarcochilus hartmannii x Sarcochilus falcatus (Ref.)