My advice is to make sure you do try multi-scale first--either borrow from someone or go test in a store. I was one of those people who wondered if I'd be okay with it, and vast majority of people in forums said they got used to it very quickly and didn't even have to think about it, while some said playing certain chords higher up on the neck was a real problem.
I wanted a Dingwall badly for it's amazingly articulate tone and stellar reputation, so I bought one without ever playing one. I spent the next several months trying to get used to it, and I never could get as comfortable on it as I could with normal frets. It's true that playing some chords up on the neck was nearly impossible because physiologically your fingers can't twist that way, but even without playing chords, the lower frets simply extended too far away and the spacing between each fret too wide. I felt like a child playing an adult's bass, whereas on a normal 34" scale bass, I could cover one finger per fret comfortably. It just wasn't as easy to play.
And then there's the very limited choice of strings. None of the strings I wanted to use were available for it.
It's an amazing bass--but for someone else. I couldn't get comfortable with it.
The Ibanez multi-scale is not nearly as severe as Dingwall's, and maybe it's not much of an issue, but at this point I just want to play on normal 34" scale because it's so comfortable.