To find out what stairs you can currently challenge someone in, first go to the Main Stairs Page, then click on "Show your stairs only" link. The ones in BOLD are ones you can make a challenge in. .
It would be nice if there was at least a way to have the 2 games of the match, be played at the same time (like in tournaments) instead of one after the other.
I do think a set of stairs using "Normal Game" (1 game matches) (fast, standard and slow) would be popular. Yes, you can get them in some fellowships, but they tend to have less people participating.
Fencer did say he would think about it, the last time I asked him about the possibility. :-)