I recently discovered that the reason I hate cheese knives (but love cheese) is because they are made to work for right-handed people.
So where can I buy a (reasonably priced) cheese knife, or other serrated knives?
We have been selling left handed products now for 50 years this year - supplying the vast majority of specialist left handed stores around the world.
I can confirm that Left handers do indeed need knives that are sharpened / scalloped / serrated on the opposite side to a right handed blade. So, holding the knife in your left hand - pointing it away from your body - the scallop / serration / etc should be on the right (nearest your body). This will dramatically improve the way that you cut meat / veg / etc - and be safer for you as well.
You should be able to find Paring / Vegetable / Cook's / Bread / Cheese knives - and many more at any good left handed specialist store.
All professional knives (except for single-bladed Japanese sashimi knives) are ambidextrous.