I've had one on my commuter bike for over 20 years now:
http://www.os2.dhs.org/~john/commuter/05.jpg

How long does it take you to remove and re-install the front wheel in the event of a flat tire? Love them Suntour Power Shifters! :thumb:

With the Sturmey Archer hub like pictured on my bike or the one in the OP, wheel changes are super easy--cable stop at the brake comes off by hand, cable adjuster comes out of a slot in the torque-arm, undo the 15m bolts and you're done. Not much more difficult than dealing with canti or V-brakes when changing a tire.

Shameless plug

Like mconlonx said, there's a ball at the end of the cable that goes into a groove on the brake arm. Also the reaction arm slips into a pocket in the clamp around the fork leg. I'd say it adds less than 5 seconds to a tire change compared to any other bolt on front wheel.

I've had one on my coaster brake steamroller for about 5 years now. It has never needed an adjustment.

Which makes it the logical choice for an NJS Vivalo track bike.

It makes it the right choice for a front brake on a fork that you dont want drilled. The "weatherproof" qualities dont matter to that bike/ But the lack of fork modification needed is the selling point.

I think I'd buy a cheap carbon fork and save the original before I put a drum brake on a track bike.

It doesn't take long. The cable can be readily disconnected just like the MAFAC centerpulls and cantilevers. Then it's just a matter of loosening the axle nuts and disconnecting the bolt on the reaction arm.