Angelo, interesting that cowperi is considered a synonym of rhyolithensis. I have about three tiny cowperi seedlings right now, so we will see what they do. Yes, I grow seedlings in a tray and pots without baggies. I like to interact with them a lot.
I think they only look huge because the photos are super macros, using a tripod. But I love looking at the details. It turns out also that photography is a good way to inspect the pots for problems, etc.