Pointy front brake lines on a curvy
 

For people asking the same question I thought I'd write it up on here.
Yes you can fit pointy front brake lines on a curvy, you just need to change the master cylinder bolt.

After much searching on the web and lots of I'm not paying that much. I ordered a set of pointy brake lines (hopefully) to fit my curvy 650s from m&p (motrax £20 ish)
Well they arrived. So did the extra double banjo bolt for the master cylinder which is required, 10x1.0 from eBay not the 10x1.25 that the 650s 03 and upwards takes. The brakes themselves use the same bolts though the range it would appear 10x1.25 shiny new ones came with the brake lines as well as enough crushable washer to fit.

One lunch brake and a half a bottle of brake fluid later (not to drink) and it was all done.
The brakes have never felt so responsive. Hopefully this info will help somebody else out.