Looks like Speed Wallet are one of the first to add Taproot Assets support and kick off the #altcoins on Lightning pitch with USDT-LN, looks like they're focused on merchants by the pitch and I guess they appeal to those looking to switch to a cheaper version of #USDT like those using chains like TRON and ETH 

Personally I have no need for this, but it might appeal to the non-bitcoin side of nostr who would prefer zaps in stables or something

Thoughts?

https://www.tryspeed.com/blog/speed-wallet-introduces-usdt-on-lightning/