In my own practice, I have been starting to experiment with 1-3-4 fingering, particularly after watching this Anders Jormin video closely.
I have yet to explicitly try it on a gig, but I have been finding it useful for more melodic playing.
Very nice playing. I'm not sure that he's using 1-3-4 fingering, per se. He definitely makes liberal use of the 3rd finger, in some places where it's fairly conventional for 1-2-4'ers, such as around the neck heel and up and also for string crossings; and in some places where it doesn't exactly make sense to me but it evidently does for him. But he is also generally using the 2nd finger where I would expect it.