No I haven't ever used my Ashdown octaver. The chorus isn't easy to control either. It's easy to play with all the other nice sound options when I'm home,  but when I'm at a band prac, and can actually hear how they sound in a live context a 3 or 4 band EQ is all I can really have time to fiddle with, and maybe a bit of gain. I'm not saying all those options are bad,  I don't think they are,  I'm just not clever enough to cope with them all.