Hi there @HanaleiMoon!
Thanks for reaching out to us in the Community! Please allow us some time to circle back with you on future availability of the Quarter Dome 1.
To answer your question about durability of the SL 1, customers have been very happy with the performance of this tent. As you noted, it is lightweight and therefore should be treated with care. As with all our tents, we strongly recommend the use of a footprint to protect your tent from unnecessary exposure to harm.