My stick is also listed on the September git link you provided: TP-LINK Archer T3U; lsusb = ID 2357:012d.
I bought it to have IEEE 802.11ac for good IPTV reception on my Vuplus Zero.
I wish it will be included in the next OpenPLi image, I already gave up messing with kernels and manual driver installation to no avail.
Thanks for your work.