Very good one!! Here in new Zealand, we just use a piece of 9ft mono, not tapered. Not great for transfer of energy and landing flat but still doable by a hard wrist stop on forward cast and saves the headaches of tippet
You can absolutely do that, depending on your nail knot skill it can take a little more time to tie and can be difficult when on a boat or in the water. The loop to loop allows for faster leader swap outs
