I should probbely add that I have a 2" BDS kit that I will be putting on here soon so with that and my shackles and body lift I should have around 3.5" to 4" of lift. Plus I'll be adding some TJ flares. Ya I hear the swampers don't like the highway too and thats mostly what I travel
Well, with 3.5: total lift, the 33" should fit (keep in mind that 33" Swampers are like 35" regular MT), especially if you do a TJ flare conversion, you should be fine. But if highway is the main use, I would probably go in another direction... BFG MT or so. I hear they wear pretty good. Toyo's I have heard are good on pavement as well...
The down side of the swampers will be wear, noise, and wet pavement handling for the highway. Consider that, and if it is worth it to you, by all means, go for it.
But I got no experince with them, as my tires are still what came with the Jeep and will stay there until they wear out; then it's BFG MT KM2 for me (33").