I wouldn't try pinching. If you pinch yourself in a dream it will still hurt. LaBerge pretty much says to never use this technique in EtWoLD.
Generally speaking RCs are used after you already suspect it's a dream. If you do an RC in a nonlucid it will very rarely get you lucid. When you say "wait a second that's not right, is this a dream?" an RC will confirm the dream and get you fully lucid.