I am trying out with two gospel groups this weekend, both of which the U-Bass' sound might work for, so I am taking it with me in addition to the Gretsch. The first is a gospel group seems to like their fast stuff, so the short sustain of the U-Bass won't be noticed. The second group is a gospel-blues band, and I am thinking the low end thump of the U-Bass might sound good in that context, and the bass tends to play very few whole notes in a blues setting, the lack of sustain shouldn't be a problem.