Ping me a private message, If you can find me a place to send them, happy for them to be downloaded/shared.
I've definitely setup VSN with BGP to a Vyos temp router. I think probably 5 VS, each with a routemap in / out & GR Helper.
In terms of a lab, you can install it in Proxmox (I'm personally less a fan of ESX as it doesnt allow me to do as much for free 🙂 but that also works). You need to keep in mind how Sync works, but Shai put up some notes on making it work in labs. If you need them, they're on Check Mates (let me know if you cant find them!)
If you ask your SE, I setup a lab (but not "build from scratch" to get experience with EXL) - this runs in a cloud platform and helps with the more practical things. No VSN though in that demo. I'm working on a partner training kit for EXL and VSN, but, we had planned to get at least the initial install done, to avoid wasting people's time (so it would not include all the basic steps, and may include running the FTW on the 1st member, just to save time.
Tom