Not bad at all... pretty damn good in fact.
In general, I've found things like CA and bokeh are very condition dependent - move just a bit, or focus a couple of mm differently, and the results are very diffrent. I'm blabbing about that because I've just tested the 70 ltd against the Tamron 90 2.5, and I don't think the Tamron lost. And, well, you brought up bokeh
I like the Tamrons of that era. Your pics sure are sharp and the while the bokeh isn't technically entirely neutral it is well organized and as close to neutral as the 135 length usually permits. How do you like this vs. the Tak 3.5?