the way i help me in this case is:
i record the reverb to a stereo-track and apply the comp to the inserts. i couldn't find any send-fx-returns to channels in sx till now, the programm doesn't offer this option (what a pity).
the good in it is that the snare reverb won't use any cpu-power anymore once it's bounced to an audiotrack.
routing the fx to another bus won't solve the problem if you don't have an outboard-comp (no inserts in busses...)
