I ran a rig for years using a full range bass rig, then took the line out, went through a 300Hz high pass filter, then into effects, into a guitar amp. I found I could use a small guitar amp.
This worked well. I could use effects that usually don't work great with bass, like delay, reverb, octave up, and of course, guitar distortions. All this was on top of my untouched bass tone.