I tend to use as few parentheses as I can. The reason is that when I see them then I know they mean something. Usually they mean that I am overriding operator precedence, my $foo = ($bar + 1)/2; or I need to terminate the argument list of a function or builtin, print map( {baz $_} @quux), ' results.', $/; The effect is about like the style you describe, and I'm happy with it.

In general I try to follow perlstyle, but my efforts may show a few quirks.