I just put nokian 160 studs on my bike. There is just a little hum from the studs when i go straight. Lean into a corner and the studs start to hum real good. I dont seem to have lost any traction on bare pavement. I can still stand the bike up on the front wheel when braking.
But when you lean into that conrner and there is a ice patch they are just great.
Coming down a sonwy muddy icy path. I stood the bike up on the front wheel.
These things are great so far.