In terms of writing, I followed SPAG when I was rp'ing cause I basically had to. The HP rp had decent standards, and shiver had high ones. So *shrugs* there wasn't really an option of not doing SPAG. The HP rp was an OOC/IC one, and I was playing IC!Hermione, so I had to keep it canon, but all I really want from an rp that I'm reading is consistency. If it's a canon rp, stay ic, if it's not, stay within the rules you're playing with.