The Chicago manual of style tells us that one should hyphenate compound nouns where both nouns are of equal importance; common examples include "philosopher-kin

The Chicago manual of style tells us that one should hyphenate compound nouns where both nouns are of equal importance; common examples include "philosopher-king" and "nurse-practitioner". Besides, the slash is arguably more often used to mean "or" (think "he/she") than "and".