Scalp wounds will bleed like a stuck pig. Direct pressure is best, assuming no underlying skull fracture. Using tape to bandage a dressing in place does not put hardly any pressure on the wound. You need Kerlix, Coban or something like that. Coban sticks to itself very well and would be my recommendation to stock in your kit. Encircling the head. Tape holds a dressing in place to keep things clean (or at least to keep them from getting dirtier). To actually apply pressure, you'd need to wrap that tape all the way around your head with a little gusto. Have fun getting that out of your hair later. Ouch!

Scalp wounds are by nature superficial. Your scalp just isn't very thick. I wouldn't think QuikClot would be all that necessary. They make gauze impregnated with the stuff, and that might not be a bad idea, held in place with some pressure by Kerlix, then overwrapped with Coban to keep everything in place.