Well... it didn't go well. It didn't go well at all.
As per the previous post, I played my 1850 Puretide Bomb list against a friend's dual Wraithknight/Wave Serpent Spam list and he killcrushed me. I made a few pretty basic errors during the game, but I don't think that would have mattered at all.
What we decided is that both lists have their devastating elements and then their elements that don't work so well. The net result is that he's going to be adding some Tau allies to his list and I'll be adding a Spiritseer/Wraithknight and 2x Dire Avenger/Wave Serpent squads.
I think that'll work out well. My plan is to stop by the local GW either today or Wednesday (they're closed on Mon/Tues) to pick up a Wave Serpent. I want to see if I can Tau it up a little. I'm not sure how easy it will be to convert, but I don't think it should be too bad.