For the former, if you load a Kit rather than a Project, it
should load with empty patterns. If it does not, something is wrong. Kits load empty for me.
For the latter question, no. However, if you BUILD a kit by loading individual instruments, the instruments should come in without any FX on them ... I think
I'd go check right now, but I'm in the midst of un-/re-installing Spark 2 due to a new issue that has cropped up for me.
They REALLY need to update this software, stat. It's buggy AF, but awesome when it works properly.