ultimately 'proper technique' is meant to help you play better, instead of developing nasty things like chronic wrist pain etc... i think it's also important to play effectivelyI tend to adopt a thumb over the top of the neck kinda playing for some stuff and the proper method for other kinda stuff. My hands just do whatever is comfortable at that time. Bad technique but it kinda alleviated my wrist strain that I was having while always using the proper method.