I use Renoise live in a band as well… I use my step sequencer that I made in max msp with renoise… at the moment its quite limited because I use my launch pad which has 64 pads… but as soon as I build my 256 monome, I will have much more possibilities. You gotta keep in mind that since the sequencer turns on and off renoise tracks inside of 8 or 16 patterns, each steps can be more than a single sound like it is in regular sequencers, also, the content of each steps can be different… I like it a lot.
I think a similar set up as mine could help you.
I have a post about it: Renoise Based Audio-video Step Sequencer