Also haven't (tempting providence here) had a puncture on my UA. I've had the rear wheel out when I had to swap the Enviolo hub (the 2nd one) so know how to do it. When I bought the UA the fella in the shop recommended getting a Gaddi tube to just tuck in, in situ. Haven'te tried it yet but looks more difficult than removing the wheel!
Also haven't (tempting providence here) had a puncture on my UA. I've had the rear wheel out when I had to swap the Enviolo hub (the 2nd one) so know how to do it. When I bought the UA the fella in the shop recommended getting a Gaddi tube to just tuck in, in situ. Haven'te tried it yet but looks more difficult than removing the wheel!