Swapping the Axle on a Dura Ace hub from Quick Release to Track Nuts

I have a Dura Ace front hub with a Quick release. It's on a bike I use for ride-outs etc rather than locking up in town. If I ever lock that bike up I put my second lock through the front wheel anyway.

Maybe getting a second lightweight lock is an option?

I would say that you need 2 locks in london, and if you do not have a seccond lock get one.