Good point, good thread Possum-Pie.
Samples are like a first date. You may like it (or hate it) at first in small drips and drabs but the only way to feel comfortable is to spend time with it. Especially with fragrances, in my experience, to see how the scent works with your body chemistry. You don't truly get that metamorphosis from a dab on the back of the hand or forearm. You have to see how it reacts when you perspire, when it's cold, sillage, longevity, etc..
I'd say of all my fragrance mistakes over the years, buying full bottles from "dab" samples is a close second to blind buys from positive reviews.