I'm not as up on my Schomburgkias as I'd like to be! I adore them, but they just get way too large for my growing conditions, so they're not practical for me to have. And the ones I've seen in person all have "undulating" petals, which this one didn't so I think that's what caused my confusion.
I do, however, have a Schomburgkia albopurpurea that should be lovely when it blooms. I'm pretty sure that one stays small.
Anyway, congrats, Keith on a LOVELY orchid!!