I got as far as I could with the char I bought off of Oddbird (I just paid the xfer fee, in case anyone is wondering). I made it all the way to Evasion 90 with 30k XP to spare. I can't go farther with this guy, so someone else will have to continue the work or provide me with another character. Evasion of 90 uses 7,818,280 XP, so I'll need more than that on a single minion.
Also, if anyone wants this char to continue testing other things, I'm guessing you can have it. I think I said I'd give it back to Oddbird, but I'm not sure. At any rate, I think it's become the communal testing char :)
There's also the fallback option of using this char to get some UC values, but I'm not sure about that. UC can be unpleasant to chart. I've done it several times already, and all the data I collected had to be thrown out because of subsequent rescales.