I am another in the 'traction tyres verboten' camp. A prime cause of track dirt, quick to deteriorate with running; and often both of unsightly appearance and a cause of poor pick-up.
Except: the one maker that had traction tyres right, from decades ago; Rivarossi, now owned by Hornby. Their tyre is transparent and near invisible when in position, doesn't cause track dirt, is very long lasting, and Rivarossi's pick up arrangements were typically so good that there is no problem there either. Perhaps we need to make Hornby aware of the useful know-how they own?
Except: the one maker that had traction tyres right, from decades ago; Rivarossi, now owned by Hornby. Their tyre is transparent and near invisible when in position, doesn't cause track dirt, is very long lasting, and Rivarossi's pick up arrangements were typically so good that there is no problem there either. Perhaps we need to make Hornby aware of the useful know-how they own?