I went away from tubulars for anything other than track racing. Tubeless is as fast or faster. Much less hassle once you get the drill down vs. gluing, removing glue, checking to make sure the glue is still good, Etc. You can put sealant in both tubular and tubeless, both tend to go flat slowly (vs. the bang flat of a tube) so there's a safety factor there (ask me about a 50 MPH descent with a slow leak vs. the aforementioned bang flat).
And you can ride tubeless flat, I did several KM back to the pit in a circuit race.
When they do flat you can repair either, one gets sent to Tire Alert, the other either is fixed with sealant or a small internal patch.