Just picked this up this afternoon and spent about an hour with Link's Crossbow Training.
I was one who was upset with the way the trigger arrangment was in the design. I was wrong. Having the shoot trigger up front is perfectly balanced and feels great. I'm a tad surprised there's not options in the software thus far to swap it around, but rest assured, it does not feel awkward at all to use the B trigger for shoot.
It's so much steadier than holding the remote one-handed that unless you need to do some nunchuk stuff, I can't imagine wanting to use the remote apart from the zapper for light gun games.
Link's Crossbow training is a good time. Just further fuels my desire to restart Twilight Princess after I 120 Mario.
If you have any interest in light-gun esque games, I can't imagine not spending the $20 on this. I got it at Best Buy; they're not doing the $5 up charge that other places seem to be.
EDIT to add: Looks like the US version of Ghost Squad allows you to swap the B and Z firing triggers. So, as I said, not a huge deal like I thought it would be, but at least comapnies are recognizing that people may want the option.