tomgamber wrote;
"You don;t want to have to e tying nail knots streamside anyway."
Of course not but one doesn't ever need to tie a nail knot streamside. Here's what I, and many of my friends, do. Save the butt end from an old leader and cut off the Perfection loop, make your piece about two feet long. Then use the nail knot tier tool or have someone do it for you so you now have the heavy butt nail knotted to the end of your fly line. Now make a Perfection Loop on the remaining tag end of the butt but don't make it any longer than 6" - 10". Now your all ready to take a new leader with a Perfection loop on it and go loop to loop and fish.
BTW I often will have the same tapered leader on a line for months! I always buy tapered leaders that are 9' long and 1X size heavier than what I want. Then I tie a very small Perfection Loop at the very end of the tapered leader and at home I'll tie up half a dozen tippets, say 5X, 24" - 36" long with a Perfection loop on one end then just loop the tippet to the loop at the end of the leader. When it gets short unloop it, and put on another pre-made tippet.
Some guys may say it will "hinge" with all the loops - I say horse puckey to that and I've never felt there is one iota of difference between the loop to loops or tippets attached via blood knots.