Actually hifistud, the claim of getting a better throat hit from a specific drip tip may not be rubbish.
Anything that changes air flow, pressure or temperature (drip tip material, design, length etc...) may affect taste and or throat hit. I'll use as an example having the cylinder head(s) of a car engine "ported" (here's a very informative Wikipedia link on the subject:
Cylinder head porting - Wikipedia, the free encyclopedia.
Though the small volume, low pressure and short travel distance of the air passing through the drip tip would preclude most people from noticing any change in performance switching from one drip tip to another, I'm sure there are those for whom it makes a difference.
Just as there are some wine enthusiastes who can not only identify the type and vintage but also the specific vinyard / field where the grapes of the wine they're tasting were grown, and just as there are some audiophiles who can tell whether a drummer is playing his drums using wood, plastic or ivory drumsticks, you can bet your bottom dollar that we have on this forum vaping enthusiastes who can tell the difference between different style drip tips!
PS: Unfortunately, I'm defintely NOT one of them