PBA: It really depends on the situation, and your definition of hashkafah vs. halachah.
For example, you might say meshichism (the Lubavitch type) is a hashkafah. My Rav would view his stance on the issue as a binding psak. He views the hashkafah as violating halachah.
Halachah and hashkafah are not mutually exclusive. There is overlap.