i flatted with tubulars coming up tunitus creek rd in the bay area.
put on a new tire at skyline, bombed down kings mountain rd full blast with oncoming traffic, (fast, tight decent of many miles)
group caught up with me and lectured me on bike safety, now i do not do that anymore.
point is that a tubular with marginal gluing will still be pretty good. even with silca pump inflation psi.