I went digging and three threads turned up people who already have this hardware. @yeopil21 in https://xcp-ng.org/forum/topic/11799 had an LPe37102-D on a Dell R770 that never showed up at all, @jinju0504 in https://xcp-ng.org/forum/topic/11946 ended up on the -alt package on an R670, and @lukas in https://xcp-ng.org/forum/topic/8847 was running an LPe31002-M6-D with NVMe-oF back on 8.3 beta2. That last one is the older generation, so I'd guess it's the side where you most want to hear nothing regressed. Tagging them in case the cards are still on their benches.