Just received my stem in cocobolo burl wood from Dovetail Woodworks:
It has a spinning mouthpiece, it’s bigger than I thought (97mm, love the size) and the TA3 fits well (I use the grey o-rings). So far, I've been using the TA3 with the Revolve 2 with a wooden sleeve and was very satisfied with it. However, I like the new stem even a bit better because its larger size complements the TA3 well, it feels great in the hands, and especially because it hardly gets warm. Definitely recommended for the price.