I made it through the winter and only lost 1 rosette to the weather this winter, and with an ice storm covering the hypertufa with heavy ice for 2 days. Last year I changed substrates to 3/4 inorganic (Pumice, turface, and grit) and 1/4 organic (MG). The mixture was too lean for most semps in my area except for Oddity.
Sorry Greg I can't, I don't like quilled or monstrose varieties, and will never grow them. I'm attracted to symmetry, which is famously displayed in many semp varieties. Some people like odd and aberrant forms, that's fine, it's just not for me personally.
Avatar: Jovibarba x nixonii 'Jowan'
I use #2 chicken grit to feed my hens & chicks :-)