I would hesitate to include any type 1, 6, or 8 suffixes on a -wI'
verb. 1, because I'm not sure about how the reflexive nature of
the word interacts with -wI' (but I'd probably accept
something like HIvchuqwI' those who attack each other).
6, because there are analogous noun suffixes to do the same thing,
except -chu', which seems more important to a noun's
fundamental meaning. 8, because -neS would be more
appropriate on the main verb of the sentence, not tucked away
inside a noun.