I haven't read Stackpole in, quite possibly decades, but recently read his short story "Snowchild" in the tribute anthology "
Shadows of the New Sun: Stories in Honor of Gene Wolfe." I'm unclear on what if anything it has to do with Gene Wolfe's novels (it feels more Conan than Severian to me), but it's a terrific pulpy adventure, and set me on seeking out more of his books I've missed or forgotten. His Conan novelization and Belit short story are on my list, and he also has a
free story featuring the same characters from Snowchild that I'll read soon.