YES!!but change them all over at once!thats what i did!first month i was working harder and longer for the same money and i made mistakes but well worth going through the teething problems!
when i say i changed everything over i meant ALL upper floor windows(apart from a few up and overs and granny flats) and some ground floor windows.
after the first cleans were out of the way then a started wfping more ground floors on second cleans.now i wfp 80% of my round with the rest trad.
im now flying round my work and i can complete between 20%-40% more work in a day compared with trad and that includes the extra windows that i couldnt clean before the pole so extra money as well!
GIVE YOURSELF A BREAK THE FIRST COUPLE OF MONTHS!ITS A LEARNING CURVE!!

dazmond