I prefer TU for FRN models, TD for SS models.
My EDC's are fast openers w/ the tip up, i.e. Delica,Endura, Matriarch soon...But, I do carry on occasion my SS Calypso Jr. I do the pinch hole opening tech on my SS TD models,i.e., Harpy, Police...
Overall, Tip Up for me!
God will put you over...if you let Him! Mark 11:23!