Don't know about the wave blade, but I've had great luck with pocket ceramics in the past, in my experience, if the blade's good and will hold an edge, ceramic sharpeners are just fine.
Try giving it (the blade in question) a pass or two through the ceramic sharpener in between every few cuts and see if that helps. Or, you could break down and get a blade more suited to the job (no offence meant). I've had unbelievable performance from a folding filet knife I got at Wal-mart several years back, NorMark is the brand name. I got my first one about ten years ago and it's still going strong (usually carried in my back pocket and used for any food use; steak knife, boning knife, filet knife, veggy peeler, game cleaning, etc.). I was so impressed with it that I got my Dad one for his birthday one year (he's as picky about fine cutlery as it gets) then decided to get myself a back-up, which I haven't used yet because my original is still with me and doing just fine.
Sorry the advice got a little long winded, sometimes I get carried away about something that performs that good.
Troy