Yes briefly and indirectly:
Bass G into a Bass V-Amp pro, outputs from that into the TI inputs. I was using a Behringer foot controller (FCB1010) assigned to control the cutoff1 and reso1 on the TI.
Didnt do anything with it - just some random fekking around after I first got the TI
It gets most interesting when you assign a few choice notes ons to the foot switches to triggers arp patches in dynamic input mode with a fair bit of distortion on the bass - one of those things thats sounded really cool - just didnt have a use for it at the time