It should survive a dunk in the pool! Pretty sure both AXS and Di2 are IPX7 rated (1m depth for 30 minutes) and Ive never had or heard of a water ingress issue on either. Have like 30,000+ miles on the AXS group on my gravel bike with zero failures. It gets pressure washed too. That is a really big difference vs. adding in some grease. Seems like Ltwoo needs some serious design to work to get there.