I think the world of trad work has also improved over the last several years. I used GG4 (or3, the blue one) in my last year of trad work and it was amazing. It took some experimenting to get the right consistency, but once I did, it was great. Even four weeks later, with rain in between, the windows were still clean. A lot of cleaning products for the trad window cleaner does not leave the residue on the window, like the old school fairy liquid anymore.
I couldn't do trad work in the rain today though, wearing water proofs would get in the way for my liking. Wfp makes it so much easier on all levels