i started using wfp, using the backpack, but i have gone back to trad on usual small houses.
I tried it for about 2 weeks, some areas i cleaned for a few months, but for me trad is faster. Mind you, for georgian i only use wfp! and the same goes with most leaded houses. Plus, i always use it for my commercial contracts.
Most people wouldnt go back to trad, but it is better choice for me really