Most difficult and in demand aren't always a Venn diagram with intersecting circles. I have a few tricks I'm proud of, but was never a master shredder or anything. Not that I'm not trying to learn either, but it's an extremely narrow slice of pie that I'd be using them with and I have been called up for it exactly 0 times. Maybe everybody in a scene has dealt with this one before. I worked with a bassist for a while who could do all the Les Claypool stuff, but he could ONLY do the Les Claypool stuff, which is kind of a non-starter for the entire rest of music. For the average player, it's better to be good at a lot of stuff than amazing at one thing. Not saying you can't, but be ready for a time investment you might not have. EDIT: I think about that a lot lately. I used to hate on the virtuoso types like Vai because they just come off as cocky weirdos. Then again, I didn't spend my entire life and personality being known for my skill at just about every style of guitar there is, and making that my career. It's as much a curse as a blessing at a certain point because this is it. You don't get to be OK at something. You have to put that time in. I'd be cocky too.