I won't begin to speculate on why they sometimes taste spicy and sometimes fruity (too many potential factors, could be age, what it's mixed with, something in processing, relative proportions, etc).
What I can say is, I hate the spicy/peppery perique, I only like it when it's fruity.
The majority of va/per blends I have tried were peppery, though a few had the fruity taste. I'm already not the biggest fan of most virginias to begin with (though a few I love, like C&D's "Steamworks" and "Sun Bear", and several va/or bkends), so making a va-based blend peppery is even more of a "no thanks" for me.
The only va/per I had that I can remember that wasn't peppery was WCC Rouxgaroux (which, is hit-or-miss in that department, most of the time it's fruity, but occasionally I'll have a bowl or a few puffs in a bowl that are peppery).
But, the va/per style isn't the only place it's used and so far, none of those non-va/per blends have been peppery to me as far as I can remember.