Thorn resistant Inner tubes hold air longer, though more in low pressure fat tires,
than thinner, just because of the greater pressure wanting to escape..

P/V TR tubes in my 700-40 tires on camp-bike tour . Dublin Eire, to Aberdeen Scotland.
no punctures, when kept pumped up hard, let the pressure down, rode under-inflated
and tube creep sheared the valve loose, and tube failed, .. this was back home..