I use tapered leaders directly to the line, have never tried the poly. I primarily use it for swinging and kind of a
nymph/let it swing thing.
They don't mend as well as other lines at any distance but are great for areas with limited back cast room.
I have a 8 wt. line that I use on both a 9' 6" 8 wt. and a 10' 0" 7 wt. Both handle the line well. I replaced the screw in fighting butt with a 4'' lower grip on the 7 so I can cast one or two handed, kind of a bastardized switch but works pretty good and gives me a break on the shoulder when needed.
Red's Fly Shop has some various videos on the Ambush line that you might want to check out if you haven't already.