I was unsure whether it'd be any good for me as I'm mainly domestic. But I felt like p1 in that it took a couple of days to get used to it.
The main benefits I found were that my slx felt more 'balanced' with it, and the angle seems perfect for 99% of the time.
I did a job today where I needed to switch to a different brush set up, so I took off my carbon gooseneck which has the extreme brush on it, and put on the soft SL with swivel resi, blimey, the pole felt heavier and was quite whippy and I realised how excellent the carbon set-up can be.