The trigger isn’t an elastic capo; it’s similar to the Kyser except the levers point towards you rather than away from you. It would work fine on bouzouki, except you wouldn’t be able to slide it around easily. I prefer cheapo elastic capos for this reason, at least when I’m playing zouk.
i suggest you to try quickdraw capo.( see www.quickdrawcapo.com)they are not cheap ( around 30 euro), but they are great for fast changing of capo position.as i know you could find these capos at marcus music in belfast, or from northern guitar player frank killkely.
marin