I have used a backpack for 2 years and will continue to use it. However, I am using it less than I did. If I have a run of windows where I can sit it on the ground with an extension in it's great. Where I have to go into a lot of gardens with gates, washing lines etc it's not so great. It's heavy at the end of the day and hanks on everything going. . I am using ladders more again because of this. If I have a window that's dangerous, I use the backpack. Once you know you round, it can be quicker to trad that fight all the obstacles and fill a backpack every 15 mins or so.