I use the seat from my old Viper on my Equalizer, works great except for packing the stand up.
However a friend of mine, Fshafly2 showed me a different way to pack the stand so the seat will work.
You turn the platform upside down then pack the 2 pieces together, works like a charm!
The Equalizer is the sturdiest stand I have ever used and the ability to adjust the stand as you are climbing is awesome!