Just in case anyone is starting or if you do ups wfp and downs trad, I just found this out today.
I always trad downstairs as my misses works with me. But I had a day on my own yesterday and decided to wfp downs to make up my speed. Because it was windy they dried quick and when I went back to invoice the road I checked the job I'd done. Now, I know I do a good job wfp because when I do inside i see a perfect result everytime. I've been through fans, pencils, vikans, salmons etc etc and have got it down to a tee.
The job i did was crap on these downs - even though the frames are always done (by hand). So I was just thinking, if you go wfp from trad do it all straight away and get all of the frames cleaned by wfp as quick as poss whilst your still telling them it will take a few goes to get right. Otherwise you'll end up like me, I was thinking of doing downs but now I'm going to have to start all over with the dodgy results. Oh well, nows the time to do it - time they get back from work its dark so they can't tell......