About 1/3 have scapes. Some are pretty tall. I have one that I thought would bloom over the weekend, and nope, nothing yet. It looks like it is ready to "pop" but I guess it isn't full grown! It was my first visible scape, and I have been watching it for a month now!
(can you tell I am a bit anxious to meet it?) It's a Tooth x Unk, one of Sandy's seeds. ~Jan