Yep I've done it. Suuuper tedious. Which is why I suspect even though you can do 2 or more bar phrases, single bar loops (vamps?) are pretty typical, instead varying the filter envelope and distortion over time.

Off topic but I found my preferred method of 'live' performance (for dnb) was to write a tune in the DAW with the intention that a few of the lead parts be played live, then switch off those parts and render what's effectively a backing track. Meant I could sort the mixing/mastering beforehand and keep in the flow of rocking out on synths when it came to the gig. I did use ableton but only to auto load synth patches/effect chains when each backing track was triggered.

I tried many other approaches involving 5 people driving a live looping rig but the above was worked best for me, which I guess made my act a 2010 equivalent of the guy wearing the burgandy velvet suit in the hotel bar ;-)