I have a SL2 its a great lightweight pole for working at 3rd storey and above especially if their are alot of windows all at the same height although its a pain if they are all at differing heights as adding and removing sections can be awkward and time consuming
My normal everyday pole is a telescopic facelift pole its resonably light with slim pole sections and is great for when you have windows of differing heights
The only thing to be careful of with the SL2 is they are a bit fragile so you cant throw them around
Hope this helps a bit