I barred my SVT, SE, SE and Grand Am. That $#)t really works! I do agree about waxing. It rained shortly after I did my car and it didn't seem to bead very well.
As far as the swirl marks, it won't work too good. I bought the Meguirs step 1 paint cleaner. (I couldn't find the Mother's equivalent). It is a very mild compound cleaner and it did take the fingernail marks under the door handles. That made a big difference.
I received a free bottle of Meguirs spray carnauba wax the other day and I tried it last night. It is a much thicker spray than some spray waxes I've used. I am VERY impressed with it. The finish is very smooth.
Get to waxing gdub