Since most of us now have extra time to ponder... tires or tyres?

Two of my bikes need tires. 83 bianchi and an 85 peugeot. Just wrapped my ironman's with vittoria corsa, nice and sticky, but that's my fast bike. I'm itching to do the same for those other 2 bikes but is it overkill? Like lipstick on a pig, does a CV need sticky rubber or would some period correct gumwall cheapies work? I may ride all of them on half centuries but will I need to pay the extra $ for carpet queens? Will it even make a difference with the heavy steel frame. Thoughts? Help me justify taking money from my covid survival fund.