Yep, WFP is the bees knees on leaded

Far quicker than Trad.
Squeaks does do them quick with his method, and because of the lead o the glass it will dtrect from any possible smears he may leave.
That isn't a slight on Roger by the way, prior to WFP I did them the identical way, but I also knew full well that in the right light and angle you would see the buff marks from the scrim or microfibre.
The method Squeaks uses IS quick, but it's bloody hard work

You wouldn't want several biggish leaded accounts to do in a row, you'd be exhausted by the time you were done

Old leaded doesn't always leak either, and when it does it is often just a little dribble on the inside, it isn't as if most of the windows will leak like a sieve!
But you do have to watch what you are doing carefully.
Ian