Only ever had punctures on hard used work vehicles and even then, just slow punctures with nails etc fixed without need of the spare.

That said, should anyone within reasonable distance of North East Scotland require a spare for their spline wheeled Morgan, I’ll happily loan one from my fancy set, part of the reason I bought the set of wheels was for the “ just in case.” I wouldn’t want to cart it around all the time though, the furthest my Morgan will be from home is still only a few hours, I’ll get the butler to bring one to me should I ever need it it.