The worm in my brain that wriggles around and tells me to buy more wheels struck again. Got some 56mm conicals (regular conicals, not the fulls).
A related observation: when ace af1s first came out, I was concerned that the self re-threading axle nuts would potentially wear down the axles more with frequent wheel changes. From my experience going through wheels faster than I do boards, the actual issue is the rethreading nyloc wear down instead. I have a nut that feels loose and two axels that have a hard time catching thread.