Really nice karting boots are great if you have load cell pedals. I spent quite a while trying to find a pair with a thin enough soul for my liking and I ended up with the Tech 1k from alpinestars.
I love the shoes, but if I'm being honest I only use them about half the time I spend in the rig. I have Clubsport V3s, so maybe if I had HE or Hydraulic pedals I would wear the shoes more.