I've been using some various guitar pedals with my bass recently. A good number of them pull out the right freq bands to produce some great 70s rock bass sounds. Use something to mix them with dry bass signal and you can end up with a winner.
As has been noted by a few folks that don't much approve of my opinion, I'll say once again that the Boss LS-2 is an excellent method of mixing your bass with other stuff as it provides two parallel chains. Placing the Oxford (or other) guitar pedal in parallel with the dry bass signal might produce some serious sickness.
Guitar pedals tend to freq-center at around 500hz or thereabouts. Oh wait ..... 500hz is also where the VT Bass is freq-centered with the mids control ... hhmmmmm .... and they both appeal to you ..... imagine that?
I wonder how the Tri-AC would work out?
(Heyyy.... that one freq-centers at 500hz as well ..... kinda makes ya go Hmmmmmm...)
Just sayin ...
I've been getting tones from my POD Pro that are indistinguishable from the VT Bass. Dammit ... there's that Hmmmmm thing again!