Yes, I use mine for insides and the odd window thats just easier to trad.
It's awesome!
I also have liquidators but find they are a "special needs" tool, they only operate well under certain conditions.
The wagtail performs well with less soap and no need for clips and the like in the ends. I have cut the end of the wagtail so its the same shape as the liquidator, angled and dogeared. No detailing, no fuss!
Works very well on a pole too.