LiteFS Cloud is what we’re calling it? Neat.
For control-plane related workloads (low writes, high reads; our data-plane workloads look different), we are currently experimenting with Cloudflare D1 because the free-tier (25billion 4KB reads + 50million 1KB writes; ref) is essentially enough for 100x our current workload. Beyond the free-tier, you get 100million 4KB reads / 1million 1KB writes for $1. So, something to keep in mind 
Though, I imagine LiteFS can support plugins like sqlite-vss relatively easily?