Panasonic NJS

Nooooooo!

Don't listen to them! Drilling is NOT the answer. Just think of those beautiful Panasonic stamped fork crowns!

**Plus the drop is so tiny you'll have a nightmare finding a caliper that will fit. **

And if you get a pre-drilled fork, it'll affect the geometry and therefore the handling. Sod that.

Clamp on is fine. Ask Edmundro at Norths, he and I both got clamp-ons at the same time. And we're both fine.

+1 I've been using mine round Londons famous Muswell Hill, I will say the pads are fairly wonk(Salmon Koolstops seem to help apparently) on my unmachined rims and are a tad juddery. Combined with a manly whip-skid they stop way better than the 600ax on my road bike.
I was gonna drill but there was no room on the back side of the crown without risk of cracking it. (I don't have sexy njs to worry about though).
It's a brake, it's there to keep your teeth in place, not look pretty.