It shifted fine prior, but I can tell it's even smoother now. Shudder seems to be gone, but my XREAS shocks are shot and it's really hard to tell the difference between the shudder and shitty suspension components. They did a full fluid exchange. Looks like they used 12 quarts total using WS (and added the bottle of Wynn's Shudderguard I provided). I had it done at the dealer so I got the full-value corn-holing on price - $269 - but I wanted to make sure it was handled by a competent Toyota tech who knows these transmissions and not someone who's a generic ASE.
Getting the entire suspension replaced next week with Fox 2.5s, OME springs, new UCAs and LCAs so that will give me a lot more info.