The Kalavinka isn't drilled for brakes - that's the point. It's a track bike with two plates fitted to be able to add/remove hand brakes when off/on the track.
Road bike conversions are still road bikes, fixed gear or not.
A track bike with brakes fitted at some point in its life (by drilling, or not) is still a track bike.
A track bike with the slackest geometry in the world can still be raced on the track (assuming still UCI/club legal) and is still a track bike.
If you removed the brakes from the Witcomb you could race it on the track and thus it could be a track bike.
Winning on the track or losing on the track doesn't change the bike you are riding from 'track' to 'non track'.
The Kalavinka isn't drilled for brakes - that's the point. It's a track bike with two plates fitted to be able to add/remove hand brakes when off/on the track.
Road bike conversions are still road bikes, fixed gear or not.
A track bike with brakes fitted at some point in its life (by drilling, or not) is still a track bike.
A track bike with the slackest geometry in the world can still be raced on the track (assuming still UCI/club legal) and is still a track bike.
If you removed the brakes from the Witcomb you could race it on the track and thus it could be a track bike.
Winning on the track or losing on the track doesn't change the bike you are riding from 'track' to 'non track'.